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Yang X, Tohda C. Diosgenin upregulates axonal guidance partner molecules, Galectin-1 and Secernin-1. Neurosci Lett 2024; 842:137954. [PMID: 39214332 DOI: 10.1016/j.neulet.2024.137954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 06/19/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
Galectin-1, a β-galactosides-binding protein, is widely expressed in various tissues and exhibits diverse biological activities. We previously obtained following findings; 1) Diosgenin, a steroid sapogenin, promoted axonal regeneration in the brain and recovered memory deficits in a model of Alzheimer's disease (AD), 5XFAD mouse; 2) Neuron-specific overexpression of Galectin-1 protein in the hippocampus recovered memory impairment and promoted axonal regeneration in the brain in 5XFAD mice; 3) Secernin-1, a counterpart and axonal guidance molecule for Galectin-1-expressing axons, was secreted from the prefrontal cortical neurons to promote axonal guidance from the hippocampus to the prefrontal cortex. However, it has never been elucidated that diosgenin signaling increase Galectin-1 and Secernin-1 or not. Here, we found that diosgenin treatment upregulated the protein level of Galectin-1 in the hippocampus both in primary cultured neurons and in 5XFAD mouse brains. In addition, diosgenin-induced upregulation of Galectin-1 was diminished by treatment of a neutralizing antibody of 1,25D3-membrane-associated rapid response steroid-binding receptor (1,25D3-MARRS), a direct binding receptor for diosgenin. Importantly, knockdown of Galectin-1 in hippocampal neurons inhibited axonal growth activity of diosgenin. Furthermore, the expression level of Secernin-1 was also increased in prefrontal cortical neurons by administration of diosgenin to 5XFAD mice. These findings suggest that diosgenin is a suitable compound to facilitate Galectin-1-Secernin-1-mediated axonal growth in AD brains.
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Affiliation(s)
- Ximeng Yang
- Section of Neuromedical Science, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Chihiro Tohda
- Section of Neuromedical Science, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
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2
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Hyeon B, Lee H, Kim N, Heo WD. Optogenetic dissection of RET signaling reveals robust activation of ERK and enhanced filopodia-like protrusions of regenerating axons. Mol Brain 2023; 16:56. [PMID: 37403137 DOI: 10.1186/s13041-023-01046-6] [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: 04/06/2023] [Accepted: 06/21/2023] [Indexed: 07/06/2023] Open
Abstract
RET (REarranged during Transfection) is a receptor tyrosine kinase that transduces various external stimuli into biological functions, such as survival and differentiation, in neurons. In the current study, we developed an optogenetic tool for modulating RET signaling, termed optoRET, combining the cytosolic region of human RET with a blue-light-inducible homo-oligomerizing protein. By varying the duration of photoactivation, we were able to dynamically modulate RET signaling. Activation of optoRET recruited Grb2 (growth factor receptor-bound protein 2) and stimulated AKT and ERK (extracellular signal-regulated kinase) in cultured neurons, evoking robust and efficient ERK activation. By locally activating the distal part of the neuron, we were able to retrogradely transduce the AKT and ERK signal to the soma and trigger formation of filopodia-like F-actin structures at stimulated regions through Cdc42 (cell division control 42) activation. Importantly, we successfully modulated RET signaling in dopaminergic neurons of the substantia nigra in the mouse brain. Collectively, optoRET has the potential to be developed as a future therapeutic intervention, modulating RET downstream signaling with light.
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Affiliation(s)
- Bobae Hyeon
- Department of Life Sciences, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon, 305-701, Republic of Korea
| | - Heeyoung Lee
- Department of Life Sciences, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon, 305-701, Republic of Korea
| | - Nury Kim
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Won Do Heo
- Department of Life Sciences, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon, 305-701, Republic of Korea.
- Korea Advanced Institute of Science and Technology (KAIST), KAIST Institute for the BioCentury, 291 Daehak-Ro, Yuseong-Gu, Daejeon, 305-701, Republic of Korea.
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3
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Zheng L, Xia J, Ge P, Meng Y, Li W, Li M, Wang M, Song C, Fan Y, Zhou Y. The interrelation of galectins and autophagy. Int Immunopharmacol 2023; 120:110336. [PMID: 37262957 DOI: 10.1016/j.intimp.2023.110336] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/03/2023] [Accepted: 05/10/2023] [Indexed: 06/03/2023]
Abstract
Autophagy is a vital physiological process that maintains intracellular homeostasis by removing damaged organelles and senescent or misfolded molecules. However, excessive autophagy results in cell death and apoptosis, which will lead to a variety of diseases. Galectins are a type of animal lectin that binds to β-galactosides and can bind to the cell surface or extracellular matrix glycans, affecting a variety of immune processes in vivo and being linked to the development of many diseases. In many cases, galectins and autophagy both play important regulatory roles in the cellular life course, yet our understanding of the relationship between them is still incomplete. Galectins and autophagy may share common etiological cofactors for some diseases. Hence, we summarize the relationship between galectins and autophagy, aiming to draw attention to the existence of multiple associations between galectins and autophagy in a variety of physiological and pathological processes, which provide new ideas for etiological diagnosis, drug development, and therapeutic targets for related diseases.
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Affiliation(s)
- Lujuan Zheng
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Jing Xia
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Pengyu Ge
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Yuhan Meng
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Weili Li
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Mingming Li
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Min Wang
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Chengcheng Song
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Yuying Fan
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| | - Yifa Zhou
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
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Axonal Regeneration Mediated by a Novel Axonal Guidance Pair, Galectin-1 and Secernin-1. Mol Neurobiol 2023; 60:1250-1266. [PMID: 36437381 DOI: 10.1007/s12035-022-03125-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 11/04/2022] [Indexed: 11/29/2022]
Abstract
Galectin-1 (Gal-1), a member of the Galectin family, is expressed in various tissues and responsible for multiple biological activities. Previous studies reported that extracellular Gal-1 participated in axonal growth and repair, and Gal-1 knockout mice exhibited memory impairment. However, no study has demonstrated the direct contribution of intracellular Gal-1 upregulation in neurons to promoting axonal regeneration in the brain and recovering memory function. In the present study, we found that axonal growth is promoted by overexpression of Gal-1 via adeno-associated virus serotype 9 delivery in primary cultured hippocampal neurons. Moreover, Gal-1 was expressed on the membranes of growth cones in hippocampal neurons and interacted with a novel axonal guidance molecule, Secernin-1, which was secreted from prefrontal cortex (PFC) neurons. Gal-1-overexpression-driven axonal growth was enhanced when recombinant (extracellular) Secernin-1 was treated to the axonal site in a neuron device chamber. Direct binding of extracellular Secernin-1 with Gal-1 was detected through immunoprecipitation and immunocytochemistry, demonstrating that Gal-1 possibly works as an axonal guidance receptor for Secernin-1 in hippocampal neurons. In the PFC, the expression of Gal-1 in axonal shafts and terminals of hippocampal neurons was decreased in the 5XFAD mouse model of Alzheimer's disease (AD). Overexpression of Gal-1 in hippocampal neurons recovered memory deficits and induced axonal regeneration toward the PFC in 5XFAD mice. This study suggests that the enhanced interaction of Secernin-1 and Gal-1 can be harnessed as a therapeutic strategy for long-distance and direction-specific axonal regeneration in AD.
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He X, Song J, Gao H, Li Z, Wang X, Zeng Q, Xiao Y, Feng J, Zhou D, Wang G. Serum brain-derived neurotrophic factor and glial cell-derived neurotrophic factor in patients with first-episode depression at different ages. Int J Psychiatry Clin Pract 2022:1-9. [PMID: 35980319 DOI: 10.1080/13651501.2022.2107938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
OBJECTIVES We investigated the differences in serum brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) levels and clinical symptoms with first-episode depression at different ages. METHODS Ninety patients (15-60 years old) diagnosed with first-episode depression were enrolled as the study group, and they were divided into early-onset, adult and late-onset groups. The age-matched control groups were healthy volunteers. Serum BDNF and GDNF concentrations were determined by enzyme-linked immunosorbent assay (ELISA). GraphPad Prism 9 was used for t tests, one-way ANOVAs, chi-square tests, and correlation analyses. p < 0.05 indicated significant differences. RESULTS Serum BDNF and GDNF levels were lower in the whole study group and the three subgroups than in the healthy groups. Illness severity, anxiety and education were higher in the early-onset than late-onset patients. Serum BDNF levels were lower in the adult than late-onset patients. Serum BDNF levels were negatively correlated with patient CGI-SI scores. After the LSD test for multiple comparisons, the results were also significant. CONCLUSIONS Low serum BDNF and GDNF levels may be involved in the pathophysiology of first-episode depression, and there were differences in serum BDNF levels at different ages, verifying that serum BDNF and GDNF could serve as potential biomarkers of depression. KEY POINTSDepression is often conceptualised as a systemic illness with different biological mechanisms, but satisfactory explanations have not been provided thus far.The aim of our study was to investigate differences in serum BDNF and GDNF levels and their relationships with clinical symptoms in patients with first-episode depression at different ages.The potential of the neurotrophic factor hypothesis to advance the diagnosis and treatment of depression will be a very exciting new strategy for future research.
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Affiliation(s)
- Xianping He
- Growth, Development, and Mental Health of Children and Adolescence Center, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Health and Nutrition, Chongqing, China
| | - Jingyao Song
- Chongqing Changshou District Third People's Hospital, Chongqing, China
| | - He Gao
- Chongqing Changshou District Third People's Hospital, Chongqing, China
| | - Zhenyang Li
- Chongqing Changshou District Third People's Hospital, Chongqing, China
| | - Xiaochun Wang
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Qiaoling Zeng
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Yucen Xiao
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Jiaxin Feng
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Dongdong Zhou
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Gaomao Wang
- Mental Health Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
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Saiki T, Nakamura N, Miyabe M, Ito M, Minato T, Sango K, Matsubara T, Naruse K. The Effects of Insulin on Immortalized Rat Schwann Cells, IFRS1. Int J Mol Sci 2021; 22:ijms22115505. [PMID: 34071138 PMCID: PMC8197103 DOI: 10.3390/ijms22115505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 01/02/2023] Open
Abstract
Schwann cells play an important role in peripheral nerve function, and their dysfunction has been implicated in the pathogenesis of diabetic neuropathy and other demyelinating diseases. The physiological functions of insulin in Schwann cells remain unclear and therefore define the aim of this study. By using immortalized adult Fischer rat Schwann cells (IFRS1), we investigated the mechanism of the stimulating effects of insulin on the cell proliferation and expression of myelin proteins (myelin protein zero (MPZ) and myelin basic protein (MBP). The application of insulin to IFRS1 cells increased the proliferative activity and induced phosphorylation of Akt and ERK, but not P38-MAPK. The proliferative potential of insulin-stimulated IFRS1 was significantly suppressed by the addition of LY294002, a PI3 kinase inhibitor. The insulin-stimulated increase in MPZ expression was significantly suppressed by the addition of PD98059, a MEK inhibitor. Furthermore, insulin-increased MBP expression was significantly suppressed by the addition of LY294002. These findings suggest that both PI3-K/Akt and ERK/MEK pathways are involved in insulin-induced cell growth and upregulation of MPZ and MBP in IFRS1 Schwann cells.
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Affiliation(s)
- Tomokazu Saiki
- Department of Pharmacy, Aichi Gakuin University Dental Hospital, Nagoya 464-8651, Japan;
| | - Nobuhisa Nakamura
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
- Correspondence: ; Tel.: +81-52-759-2111; Fax: +81-52-759-2168
| | - Megumi Miyabe
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Mizuho Ito
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Tomomi Minato
- Department of Clinical Laboratory, Aichi Gakuin University Dental Hospital, Nagoya 464-8651, Japan;
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
| | - Tatsuaki Matsubara
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Keiko Naruse
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
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Laloze J, Fiévet L, Desmoulière A. Adipose-Derived Mesenchymal Stromal Cells in Regenerative Medicine: State of Play, Current Clinical Trials, and Future Prospects. Adv Wound Care (New Rochelle) 2021; 10:24-48. [PMID: 32470315 PMCID: PMC7698876 DOI: 10.1089/wound.2020.1175] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/21/2020] [Indexed: 12/13/2022] Open
Abstract
Significance: Wound healing is a complex process involving pain and inflammation, where innervation plays a central role. Managing wound healing and pain remains an important issue, especially in pathologies such as excessive scarring (often leading to fibrosis) or deficient healing, leading to chronic wounds. Recent Advances: Advances in therapies using mesenchymal stromal cells offer new insights for treating indications that previously lacked options. Adipose-derived mesenchymal stromal cells (AD-MSCs) are now being used to a much greater extent in clinical trials for regenerative medicine. However, to be really valid, these randomized trials must imperatively follow strict guidelines such as consolidated standards of reporting trials (CONSORT) statement. Indeed, AD-MSCs, because of their paracrine activities and multipotency, have potential to cure degenerative and/or inflammatory diseases. Combined with their relatively easy access (from adipose tissue) and proliferation capacity, AD-MSCs represent an excellent candidate for allogeneic treatments. Critical Issues: The success of AD-MSC therapy may depend on the robustness of the biological functions of AD-MSCs, which requires controlling source heterogeneity and production processes, and development of biomarkers that predict desired responses. Several studies have investigated the effect of AD-MSCs on innervation, wound repair, or pain management separately, but systematic evaluation of how those effects could be combined is lacking. Future Directions: Future studies that explore how AD-MSC therapy can be used to treat difficult-to-heal wounds, underlining the need to thoroughly characterize the cells used, and standardization of preparation processes are needed. Finally, how this a priori easy-to-use cell therapy treatment fits into clinical management of pain, improvement of tissue healing, and patient quality of life, all need to be explored.
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Affiliation(s)
- Jérôme Laloze
- Faculties of Medicine and Pharmacy, University of Limoges, Myelin Maintenance and Peripheral Neuropathies (EA 6309), Limoges, France
- Department of Maxillo-Facial and Reconstructive Surgery and Stomatology, University Hospital Dupuytren, Limoges, France
| | - Loïc Fiévet
- STROMALab, Etablissement Français du Sang (EFS)-Occitanie, INSERM 1031, National Veterinary School of Toulouse (ENVT), ERL5311 CNRS, University of Toulouse, Toulouse, France
| | - Alexis Desmoulière
- Faculties of Medicine and Pharmacy, University of Limoges, Myelin Maintenance and Peripheral Neuropathies (EA 6309), Limoges, France
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Lee KA, Park TS, Jin HY. Non-glucose risk factors in the pathogenesis of diabetic peripheral neuropathy. Endocrine 2020; 70:465-478. [PMID: 32895875 DOI: 10.1007/s12020-020-02473-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 08/23/2020] [Indexed: 11/29/2022]
Abstract
In this review, we consider the diverse risk factors in diabetes patients beyond hyperglycemia that are being recognized as contributors to diabetic peripheral neuropathy (DPN). Interest in such alternative mechanisms has been encouraged by the recognition that neuropathy occurs in subjects with metabolic syndrome and pre-diabetes and by the reporting of several large clinical studies that failed to show reduced prevalence of neuropathy after intensive glucose control in patients with type 2 diabetes. Animal models of obesity, dyslipidemia, hypertension, and other disorders common to both pre-diabetes and diabetes have been used to highlight a number of plausible pathogenic mechanisms that may either damage the nerve independent of hyperglycemia or augment the toxic potential of hyperglycemia. While pathogenic mechanisms stemming from hyperglycemia are likely to be significant contributors to DPN, future therapeutic strategies will require a more nuanced approach that considers a range of concurrent insults derived from the complex pathophysiology of diabetes beyond direct hyperglycemia.
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Affiliation(s)
- Kyung Ae Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonbuk National University, Medical School, Jeonju, South Korea
| | - Tae Sun Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonbuk National University, Medical School, Jeonju, South Korea
| | - Heung Yong Jin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonbuk National University, Medical School, Jeonju, South Korea.
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Localized delivery of CRISPR/dCas9 via layer-by-layer self-assembling peptide coating on nanofibers for neural tissue engineering. Biomaterials 2020; 256:120225. [DOI: 10.1016/j.biomaterials.2020.120225] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/03/2020] [Indexed: 12/12/2022]
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10
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Murakami T, Yokoyama T, Mizuguchi M, Toné S, Takaku S, Sango K, Nishimura H, Watabe K, Sunada Y. A low amyloidogenic E61K transthyretin mutation may cause familial amyloid polyneuropathy. J Neurochem 2020; 156:957-966. [PMID: 32852783 DOI: 10.1111/jnc.15162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 04/09/2020] [Accepted: 08/14/2020] [Indexed: 12/01/2022]
Abstract
Patients with transthyretin (TTR)-type familial amyloid polyneuropathy (FAP) typically exhibit sensory dominant polyneuropathy and autonomic neuropathy. However, the molecular pathogenesis of the neuropathy remains unclear. In this study, we characterize the features of FAP TTR the substitution of lysine for glutamic acid at position 61 (E61K). This FAP was late-onset, with sensory dominant polyneuropathy, autonomic neuropathy, and cardiac amyloidosis. Interestingly, no amyloid deposits were found in the endoneurium of the four nerve specimens examined. Therefore, we examined the amyloidogenic properties of E61K TTR in vitro. Recombinant wild-type TTR, the substitution of methionine for valine at position 30 (V30M) TTR, and E61K TTR proteins were incubated at 37°C for 72 hr, and amyloid fibril formation was assessed using the thioflavin-T binding assay. Amyloid fibril formation by E61K TTR was less than that by V30M TTR, and similar to that by wild-type TTR. E61K TTR did not have an inhibitory effect on neurite outgrowth from adult rat dorsal root ganglion (DRG) neurons, but V30M TTR did. Furthermore, we studied the sural nerve of our patient by terminal deoxynucleotidyl transferase dUTP nick end labeling and electron microscopy. A number of apoptotic cells were observed in the endoneurium of the nerve by transferase dUTP nick end labeling. Chromatin condensation was confirmed in the nucleus of non-myelinating Schwann cells by electron microscopy. These findings suggest that E61K TTR is low amyloidogenic, in vitro and in vivo. However, TTR aggregates and amyloid fibrils in the DRG may cause sensory impairments in FAP because the DRG has no blood-nerve barrier. Moreover, Schwann cell apoptosis may contribute to the neurodegeneration.
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Affiliation(s)
| | - Takeshi Yokoyama
- Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | | | - Shigenobu Toné
- Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama, Japan
| | - Shizuka Takaku
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | | | - Kazuhiko Watabe
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Yoshihide Sunada
- Department of Neurology, Kawasaki Medical School, Kurashiki, Japan
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Takaku S, Sango K. Zonisamide enhances neurite outgrowth from adult rat dorsal root ganglion neurons, but not proliferation or migration of Schwann cells. Histochem Cell Biol 2019; 153:177-184. [PMID: 31879799 PMCID: PMC7060162 DOI: 10.1007/s00418-019-01839-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2019] [Indexed: 01/06/2023]
Abstract
Zonisamide, an anti-epileptic and anti-Parkinson’s disease drug, displays neurotrophic activity on cultured motor neurons and facilitates axonal regeneration after peripheral nerve injury in mice, but its underlying mechanisms remain unclear. In this study, zonisamide enhanced neurite outgrowth from cultured adult rat dorsal root ganglion (DRG) neurons in a concentration-dependent manner (1 μM < 10 μM < 100 μM), and its activity was significantly attenuated by co-treatment with a phosphatidyl inositol-3′-phosphate-kinase (PI3K) inhibitor LY294002 or a mitogen-activated protein kinase (MAPK) inhibitor U0126. In agreement with these findings, 100 μM zonisamide for 1 h induced phosphorylation of AKT and ERK1/2, key molecules of PI3K and MAPK signaling pathways, respectively in mouse neuroblastoma × rat DRG neuron hybrid cells ND7/23. In contrast, zonisamide failed to promote proliferation or migration of immortalized Fischer rat Schwann cells 1 (IFRS1). These findings suggest that the beneficial effects of zonisamide on peripheral nerve regeneration may be attributable to its direct actions on neurons through PI3K and MAPK pathways, rather than the stimulation of Schwann cells.
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Affiliation(s)
- Shizuka Takaku
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan.
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12
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Duraikannu A, Krishnan A, Chandrasekhar A, Zochodne DW. Beyond Trophic Factors: Exploiting the Intrinsic Regenerative Properties of Adult Neurons. Front Cell Neurosci 2019; 13:128. [PMID: 31024258 PMCID: PMC6460947 DOI: 10.3389/fncel.2019.00128] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 03/14/2019] [Indexed: 01/19/2023] Open
Abstract
Injuries and diseases of the peripheral nervous system (PNS) are common but frequently irreversible. It is often but mistakenly assumed that peripheral neuron regeneration is robust without a need to be improved or supported. However, axonal lesions, especially those involving proximal nerves rarely recover fully and injuries generally are complicated by slow and incomplete regeneration. Strategies to enhance the intrinsic growth properties of reluctant adult neurons offer an alternative approach to consider during regeneration. Since axons rarely regrow without an intimately partnered Schwann cell (SC), approaches to enhance SC plasticity carry along benefits to their axon partners. Direct targeting of molecules that inhibit growth cone plasticity can inform important regenerative strategies. A newer approach, a focus of our laboratory, exploits tumor suppressor molecules that normally dampen unconstrained growth. However several are also prominently expressed in stable adult neurons. During regeneration their ongoing expression “brakes” growth, whereas their inhibition and knockdown may enhance regrowth. Examples have included phosphatase and tensin homolog deleted on chromosome ten (PTEN), a tumor suppressor that inhibits PI3K/pAkt signaling, Rb1, the protein involved in retinoblastoma development, and adenomatous polyposis coli (APC), a tumor suppressor that inhibits β-Catenin transcriptional signaling and its translocation to the nucleus. The identification of several new targets to manipulate the plasticity of regenerating adult peripheral neurons is exciting. How they fit with canonical regeneration strategies and their feasibility require additional work. Newer forms of nonviral siRNA delivery may be approaches for molecular manipulation to improve regeneration.
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Affiliation(s)
- Arul Duraikannu
- Division of Neurology, Department of Medicine, and Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Anand Krishnan
- Division of Neurology, Department of Medicine, and Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Ambika Chandrasekhar
- Division of Neurology, Department of Medicine, and Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Douglas W Zochodne
- Division of Neurology, Department of Medicine, and Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
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Tactile Stimulation on Adulthood Modifies the HPA Axis, Neurotrophic Factors, and GFAP Signaling Reverting Depression-Like Behavior in Female Rats. Mol Neurobiol 2019; 56:6239-6250. [PMID: 30741369 DOI: 10.1007/s12035-019-1522-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/30/2019] [Indexed: 12/31/2022]
Abstract
Depression is a common psychiatric disease which pharmacological treatment relieves symptoms, but still far from ideal. Tactile stimulation (TS) has shown beneficial influences in neuropsychiatric disorders, but the mechanism of action is not clear. Here, we evaluated the TS influence when applied on adult female rats previously exposed to a reserpine-induced depression-like animal model. Immediately after reserpine model (1 mg/kg/mL, 1×/day, for 3 days), female Wistar rats were submitted to TS (15 min, 3×/day, for 8 days) or not (unhandled). Imipramine (10 mg/kg/mL) was used as positive control. After behavioral assessments, animals were euthanized to collect plasma and prefrontal cortex (PFC). Behavioral observations in the forced swimming test, splash test, and sucrose preference confirmed the reserpine-induced depression-like behavior, which was reversed by TS. Our findings showed that reserpine increased plasma levels of adrenocorticotropic hormone and corticosterone, decreased brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B, and increased proBDNF immunoreactivity in the PFC, which were also reversed by TS. Moreover, TS reestablished glial fibrillary acidic protein and glucocorticoid receptor levels, decreased by reserpine in PFC, while glial cell line-derived neurotrophic factor was increased by TS per se. Our outcomes are showing that TS applied in adulthood exerts a beneficial influence in depression-like behaviors, modulating the HPA axis and regulating neurotrophic factors more effectively than imipramine. Based on this, our proposal is that TS, in the long term, could be considered a new therapeutic strategy for neuropsychiatric disorders improvement in adult life, which may represent an interesting contribution to conventional pharmacological treatment.
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Liu M, Qin L, Wang L, Tan J, Zhang H, Tang J, Shen X, Tan L, Wang C. α‑synuclein induces apoptosis of astrocytes by causing dysfunction of the endoplasmic reticulum‑Golgi compartment. Mol Med Rep 2018; 18:322-332. [PMID: 29749529 PMCID: PMC6059687 DOI: 10.3892/mmr.2018.9002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 04/17/2018] [Indexed: 01/05/2023] Open
Abstract
Although previous work has demonstrated that the overexpression of wild-type or mutant α-synuclein (α-syn) can induce cell death via a number of different mechanisms, including oxidative stress, dysfunction of the ubiquitin-proteasome degradation system, mitochondrial damage and endoplasmic reticulum (ER) stress, research interest has primarily focused on neurons. However, there is accumulating evidence that suggests that astrocytes may be involved in the earliest changes, as well as the progression of Parkinson's disease (PD), though the role of α-syn in astrocytes has not been widely studied. In the present study, it was revealed that the mutant α-syn (A53T and A30P) in astrocytes triggered ER stress via the protein kinase RNA-like ER kinase/eukaryotic translation initiation factor 2α signaling pathway. Astrocyte apoptosis was induced through a CCAAT-enhancer-binding protein homologous protein-mediated pathway. In addition, Golgi fragmentation was observed in the process. On the other hand, it was also demonstrated, in a primary neuronal-astroglial co-culture system, that the overexpression of α-syn significantly decreased the levels of glia-derived neurotrophic factor (GDNF) and partly inhibited neurite outgrowth. Although direct evidence is currently lacking, it was proposed that dysfunction of the ER-Golgi compartment in astrocytes overexpressing α-syn may lead to a decline of GDNF levels, which in turn would suppress neurite outgrowth. Taken together, the results of the present study offer further insights into the pathogenesis of PD from the perspective of astrocytes, which may provide novel strategies for the diagnosis and treatment of PD in the future.
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Affiliation(s)
- Mei Liu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Lixia Qin
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Lili Wang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Jieqiong Tan
- State Key Laboratory of Medical Genetics, Changsha, Hunan 410013, P.R. China
| | - Hainan Zhang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Jianguang Tang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Xiangmin Shen
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Liming Tan
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Chunyu Wang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
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15
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Niimi N, Yako H, Takaku S, Kato H, Matsumoto T, Nishito Y, Watabe K, Ogasawara S, Mizukami H, Yagihashi S, Chung SK, Sango K. A spontaneously immortalized Schwann cell line from aldose reductase-deficient mice as a useful tool for studying polyol pathway and aldehyde metabolism. J Neurochem 2018; 144:710-722. [DOI: 10.1111/jnc.14277] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 11/27/2017] [Accepted: 12/03/2017] [Indexed: 01/16/2023]
Affiliation(s)
- Naoko Niimi
- Diabetic Neuropathy Project; Department of Sensory and Motor Systems; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Hideji Yako
- Diabetic Neuropathy Project; Department of Sensory and Motor Systems; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Shizuka Takaku
- Diabetic Neuropathy Project; Department of Sensory and Motor Systems; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Hiroshi Kato
- Sumitomo Dainippon Pharma Co., Ltd.; Osaka Japan
| | | | - Yasumasa Nishito
- Basic Technology Research Center; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Kazuhiko Watabe
- Department of Medical Technology; Faculty of Health Sciences; Kyorin University; Tokyo Japan
| | - Saori Ogasawara
- Department of Pathology and Molecular Medicine; Hirosaki University Graduate School of Medicine; Hirosaki Japan
| | - Hiroki Mizukami
- Department of Pathology and Molecular Medicine; Hirosaki University Graduate School of Medicine; Hirosaki Japan
| | - Soroku Yagihashi
- Department of Pathology and Molecular Medicine; Hirosaki University Graduate School of Medicine; Hirosaki Japan
| | - Sookja K. Chung
- School of Biomedical Sciences; Research Center of Heart, Brain, Hormone and Healthy Aging and State Key Laboratory of Pharmaceutical Biotechnology; The University of Hong Kong; Hong Kong SAR China
| | - Kazunori Sango
- Diabetic Neuropathy Project; Department of Sensory and Motor Systems; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
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16
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Skibinska M, Kapelski P, Pawlak J, Rajewska-Rager A, Dmitrzak-Weglarz M, Szczepankiewicz A, Czerski P, Twarowska-Hauser J. Glial Cell Line-Derived Neurotrophic Factor (GDNF) serum level in women with schizophrenia and depression, correlation with clinical and metabolic parameters. Psychiatry Res 2017; 256:396-402. [PMID: 28689143 DOI: 10.1016/j.psychres.2017.07.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 06/14/2017] [Accepted: 07/04/2017] [Indexed: 12/15/2022]
Abstract
AIM Neurotrophic factors have been implicated in neuropsychiatric disorders, including schizophrenia and depression. Glial Cell Line-Derived Neurotrophic Factor (GDNF) promotes development, differentiation, and protection of dopaminergic, serotonergic, GABAergic and noradrenergic neurons as well as glial cells in different brain regions. This study examined serum levels of GDNF in schizophrenia and depression and its correlation with metabolic parameters during 8 weeks of treatment. METHODS Serum GDNF level, fasting serum glucose and lipid profile were measured at baseline and week 8 in 133 women: 55 with schizophrenia, 30 with a first episode depression and 48 healthy controls. The severity of the symptoms was evaluated using Positive and Negative Syndrome Scale (PANSS), 17-item Hamilton Depression Rating Scale (HDRS) and Beck Depression Inventory (BDI). RESULTS There was statistically significant higher GDNF level in schizophrenia at baseline when compared with week 8. Correlations of GDNF with PANSS in schizophrenia and cholesterol level in depression have also been detected. CONCLUSIONS To our knowledge, this is the first study which correlates GDNF levels with metabolic parameters. Our results show no differences in GDNF serum level between schizophrenia, a first depressive episode, and healthy controls. GDNF serum level did not correlate with metabolic parameters except for total cholesterol in depression.
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Affiliation(s)
- Maria Skibinska
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland.
| | - Pawel Kapelski
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
| | - Joanna Pawlak
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
| | - Aleksandra Rajewska-Rager
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland; Department of Adult Psychiatry, Poznan University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland
| | - Monika Dmitrzak-Weglarz
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
| | - Aleksandra Szczepankiewicz
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland; Laboratory of Molecular and Cell Biology, Poznan University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland
| | - Piotr Czerski
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
| | - Joanna Twarowska-Hauser
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
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17
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Yuan Q, Sun L, Yu H, An C. Human microvascular endothelial cell promotes the development of dorsal root ganglion neurons via BDNF pathway in a co-culture system. Biosci Biotechnol Biochem 2017; 81:1335-1342. [PMID: 28394221 DOI: 10.1080/09168451.2017.1313695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Our previous study found that co-culture with human vascular endothelial cells (HMVECs) is beneficial for dorsal root ganglion cells (DRGCs). The goal of the present study is to investigate whether co-culture with HMVECs could promote the development of DRGCs, and whether this effect is induced by the secretion of BDNF by HMVECs. DRGCs were mono-cultured, co-cultured with HMVECs or co-cultured with HMVECs that pre-transfected with BDNF siRNA, the expression of neurite formation and branching factors were determined. The results showed that transfecting with BDNF siRNA inhibited BDNF expression and reduced BDNF secretion. Co-culture with HMVECs increased the expression of Etv4, Etv5, FN-L, FN-M, and GAP-43 in DRGCs that accompanied by the activation of ERK pathway. However, these changes were all reversed by the inhibition of BDNF in HMVECs. In conclusion, our data demonstrate that HMVECs potentiated DRGCs development at least partly by the secretion of BDNF in the co-culture system.
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Affiliation(s)
- Quan Yuan
- a Department of Orthopedics , Shengjing Hospital of China Medical University , Shenyang , People's Republic of China
| | - Li Sun
- b Department of Nephrology , The First Affiliated Hospital of China Medical University , Shenyang , People's Republic of China
| | - Honghao Yu
- a Department of Orthopedics , Shengjing Hospital of China Medical University , Shenyang , People's Republic of China
| | - Chunhou An
- a Department of Orthopedics , Shengjing Hospital of China Medical University , Shenyang , People's Republic of China
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18
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Niimi N, Yako H, Tsukamoto M, Takaku S, Yamauchi J, Kawakami E, Yanagisawa H, Watabe K, Utsunomiya K, Sango K. Involvement of oxidative stress and impaired lysosomal degradation in amiodarone-induced schwannopathy. Eur J Neurosci 2016; 44:1723-33. [PMID: 27152884 DOI: 10.1111/ejn.13268] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 04/28/2016] [Accepted: 04/28/2016] [Indexed: 12/14/2022]
Abstract
Amiodarone hydrochloride (AMD), an anti-arrhythmic agent, has been shown to cause peripheral neuropathy; however, its pathogenesis remains unknown. We examined the toxic effects of AMD on an immortalized adult rat Schwann cell line, IFRS1, and cocultures of IFRS1 cells and adult rat dorsal root ganglion neurons or nerve growth factor-primed PC12 cells. Treatment with AMD (1, 5, and 10 μm) induced time- and dose-dependent cell death, accumulation of phospholipids and neutral lipids, upregulation of the expression of gangliosides, and oxidative stress (increased nuclear factor E2-related factor in nuclear extracts and reduced GSH/GSSG ratios) in IFRS1 cells. It also induced the upregulation of LC3-II and p62 expression, with phosphorylation of p62, suggesting that deficient autolysosomal degradation is involved in AMD-induced IFRS1 cell death. Furthermore, treatment of the cocultures with AMD induced detachment of IFRS1 cells from neurite networks in a time- and dose-dependent manner. These findings suggest that AMD-induced lysosomal storage accompanied by enhanced oxidative stress and impaired lysosomal degradation in Schwann cells might be a cause of demyelination in the peripheral nervous system.
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Affiliation(s)
- Naoko Niimi
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Hideji Yako
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Masami Tsukamoto
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan.,Division of Diabetes, Metabolism & Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Shizuka Takaku
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Junji Yamauchi
- Department of Pharmacology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
| | - Emiko Kawakami
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Hiroko Yanagisawa
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Kazuhiko Watabe
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Kazunori Utsunomiya
- Division of Diabetes, Metabolism & Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project (Former ALS/Neuropathy Project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, 156-8506, Japan
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19
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Zhang H, Ren NT, Zhou FQ, Li J, Lei W, Liu N, Bi L, Wu ZX, Zhang R, Zhang YG, Cui G. Effects of Hindlimb Unweighting on MBP and GDNF Expression and Morphology in Rat Dorsal Root Ganglia Neurons. Neurochem Res 2016; 41:2433-42. [DOI: 10.1007/s11064-016-1956-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 03/29/2016] [Accepted: 05/11/2016] [Indexed: 12/17/2022]
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20
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Sango K, Utsunomiya K. Efficacy of glucagon-like peptide-1 mimetics for neural regeneration. Neural Regen Res 2016; 10:1723-4. [PMID: 26807090 PMCID: PMC4705767 DOI: 10.4103/1673-5374.169611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Kazunori Sango
- Diabetic Neuropathy Project (Former ALS/Neuropathy project), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Kazunori Utsunomiya
- Division of Diabetes, Metabolism & Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
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21
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Takaku S, Niimi N, Kadoya T, Yako H, Tsukamoto M, Sakumi K, Nakabeppu Y, Horie H, Sango K. Galectin-1 and galectin-3 as key molecules for peripheral nerve degeneration and regeneration. AIMS MOLECULAR SCIENCE 2016. [DOI: 10.3934/molsci.2016.3.325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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22
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Xin YL, Yu JZ, Yang XW, Liu CY, Li YH, Feng L, Chai Z, Yang WF, Wang Q, Jiang WJ, Zhang GX, Xiao BG, Ma CG. FSD-C10: A more promising novel ROCK inhibitor than Fasudil for treatment of CNS autoimmunity. Biosci Rep 2015; 35:e00247. [PMID: 26223433 PMCID: PMC4721545 DOI: 10.1042/bsr20150032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 07/07/2015] [Accepted: 07/21/2015] [Indexed: 12/14/2022] Open
Abstract
Rho-Rho kinase (Rho-ROCK) triggers an intracellular signalling cascade that regulates cell survival, death, adhesion, migration, neurite outgrowth and retraction and influences the generation and development of several neurological disorders. Although Fasudil, a ROCK inhibitor, effectively suppressed encephalomyelitis (EAE), certain side effects may limit its clinical use. A novel and efficient ROCK inhibitor, FSD-C10, has been explored. In the present study, we present chemical synthesis and structure of FSD-C10, as well as the relationship between compound concentration and ROCK inhibition. We compared the inhibitory efficiency of ROCKI and ROCK II, the cell cytotoxicity, neurite outgrowth and dendritic formation, neurotrophic factors and vasodilation between Fasudil and FSD-C10. The results demonstrated that FSD-C10, like Fasudil, induced neurite outgrowth of neurons and dendritic formation of BV-2 microglia and enhanced the production of neurotrophic factor brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF) and neurotrophin-3 (NT-3). However, the cell cytotoxicity and vasodilation of FSD-C10 were relatively small compared with Fasudil. Although Fasudil inhibited both ROCK I and ROCK II, FSD-C10 more selectively suppressed ROCK II, but not ROCK I, which may be related to vasodilation insensitivity and animal mortality. Thus, FSD-C10 may be a safer and more promising novel ROCK inhibitor than Fasudil for the treatment of several neurological disorders.
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Affiliation(s)
- Yan-Le Xin
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Jie-Zhong Yu
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Xin-Wang Yang
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Chun-Yun Liu
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Yan-Hua Li
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Ling Feng
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China
| | - Zhi Chai
- "2011" Collaborative Innovation Center/Research Center of Neurobiology, Shanxi University of Traditional Chinese Medicine, Taiyuan 030619, China
| | - Wan-Fang Yang
- "2011" Collaborative Innovation Center/Research Center of Neurobiology, Shanxi University of Traditional Chinese Medicine, Taiyuan 030619, China
| | - Qing Wang
- "2011" Collaborative Innovation Center/Research Center of Neurobiology, Shanxi University of Traditional Chinese Medicine, Taiyuan 030619, China
| | - Wei-Jia Jiang
- "2011" Collaborative Innovation Center/Research Center of Neurobiology, Shanxi University of Traditional Chinese Medicine, Taiyuan 030619, China
| | - Guang-Xian Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107, U.S.A
| | - Bao-Guo Xiao
- Institute of Neurology, Huashan Hospital, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200040, China
| | - Cun-Gen Ma
- Institute of Brain Science, Department of Neurology, Medical School, Shanxi Datong University, Datong 037009, China "2011" Collaborative Innovation Center/Research Center of Neurobiology, Shanxi University of Traditional Chinese Medicine, Taiyuan 030619, China
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23
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Tsukamoto M, Niimi N, Sango K, Takaku S, Kanazawa Y, Utsunomiya K. Neurotrophic and neuroprotective properties of exendin-4 in adult rat dorsal root ganglion neurons: involvement of insulin and RhoA. Histochem Cell Biol 2015; 144:249-59. [PMID: 26026990 DOI: 10.1007/s00418-015-1333-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2015] [Indexed: 11/26/2022]
Abstract
Glucagon-like peptide-1 (GLP-1) is thought to preserve neurons and glia following axonal injury and neurodegenerative disorders. We investigated the neurotrophic and neuroprotective properties of exendin (Ex)-4, a synthetic GLP-1 receptor (GLP-1R) agonist, on adult rat dorsal root ganglion (DRG) neurons and PC12 cells. GLP-1R was predominantly localized on large and small peptidergic neurons in vivo and in vitro, suggesting the involvement of GLP-1 in both the large and small sensory fiber functions. Ex-4 dose-dependently (1 ≤ 10 ≤ 100 nM) promoted neurite outgrowth and neuronal survival at 2 and 7 days in culture, respectively. Treatment with 100 nM Ex-4 restored the reduced neurite outgrowth and viability of DRG neurons caused by the insulin removal from the medium and suppressed the activity of RhoA, an inhibitory regulator for peripheral nerve regeneration, in PC12 cells. Furthermore, these effects were attenuated by co-treatment with phosphatidylinositol-3'-phosphate kinase (PI3K) inhibitor, LY294002. These findings imply that Ex-4 enhances neurite outgrowth and neuronal survival through the activation of PI3K signaling pathway, which negatively regulates RhoA activity. Ex-4 and other GLP-1R agonists may compensate for the reduced insulin effects on neurons, thereby being beneficial for the treatment of diabetic neuropathy.
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Affiliation(s)
- Masami Tsukamoto
- Diabetic Neuropathy Project (Former Laboratory of Peripheral Nerve Pathophysiology), Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
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Bara JJ, Turner S, Roberts S, Griffiths G, Benson R, Trivedi JM, Wright KT. High content and high throughput screening to assess the angiogenic and neurogenic actions of mesenchymal stem cells in vitro. Exp Cell Res 2015; 333:93-104. [DOI: 10.1016/j.yexcr.2014.12.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 12/16/2014] [Accepted: 12/30/2014] [Indexed: 01/01/2023]
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25
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Lin PY, Tseng PT. Decreased glial cell line-derived neurotrophic factor levels in patients with depression: a meta-analytic study. J Psychiatr Res 2015; 63:20-7. [PMID: 25726496 DOI: 10.1016/j.jpsychires.2015.02.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/08/2015] [Accepted: 02/09/2015] [Indexed: 11/24/2022]
Abstract
Glial cell-line derived neurotrophic factor (GDNF) has been shown to promote development, differentiation, and protection of CNS neurons and was thought to play an important role in various neuropsychiatric disorders. Several studies have examined the GDNF levels in patients with depression but shown inconsistent results. In this study, we compared blood GDNF levels between depressive patients and control subjects through meta-analytic method. The effect sizes (ESs) from all eligible studies were synthesized by using a random effect model. In this meta-analysis, we included 526 patients and 502 control subjects from 12 original articles. Compared to control subjects, blood GDNF levels are significantly decreased in patients with depression (ES = -0.62, p = 0.0011). However, significant heterogeneity was found among included studies. Through subgroup analysis, we found that GDNF was still decreased in studies with major depressive disorder (ES = -0.73, p = 0.0001); in studies with non-old-age depression (ES = -1.25, p = 0.0001), but not with old-age depression; and in studies using serum samples (ES = -0.86, p < 0.0001), but not in studies using plasma sample. Meta-regression did not show moderating effects of mean age of subjects, gender distribution, and age of onset of depression. Our findings support blood GDNF levels as a biomarker of depression as a whole, but the results were modulated by psychiatric diagnosis, age of included subjects, and sampling sources. With these results, future studies are required to examine whether effective antidepressant treatment is associated with an increase in serum GDNF levels.
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Affiliation(s)
- Pao-Yen Lin
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and, Chang Gung University College of Medicine, Kaohsiung, Taiwan; Center for Translational Research in Biomedical Sciences, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.
| | - Ping-Tao Tseng
- Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan
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26
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Murakami T, Sango K, Watabe K, Niimi N, Takaku S, Li Z, Yamamura KI, Sunada Y. Schwann cells contribute to neurodegeneration in transthyretin amyloidosis. J Neurochem 2015; 134:66-74. [DOI: 10.1111/jnc.13068] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 01/30/2015] [Accepted: 02/03/2015] [Indexed: 12/15/2022]
Affiliation(s)
| | - Kazunori Sango
- Department of Sensory and Motor Systems (ALS/Neuropathy Project); Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Kazuhiko Watabe
- Department of Sensory and Motor Systems (ALS/Neuropathy Project); Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Naoko Niimi
- Department of Sensory and Motor Systems (ALS/Neuropathy Project); Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Shizuka Takaku
- Department of Sensory and Motor Systems (ALS/Neuropathy Project); Tokyo Metropolitan Institute of Medical Science; Tokyo Japan
| | - Zhenghua Li
- Division of Developmental Genetics; Institute of Resource Development and Analysis; Kumamoto University; Kumamoto Japan
| | - Ken-ichi Yamamura
- Division of Developmental Genetics; Institute of Resource Development and Analysis; Kumamoto University; Kumamoto Japan
| | - Yoshihide Sunada
- Department of Neurology; Kawasaki Medical School; Kurashiki Japan
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Tsukamoto M, Sango K, Niimi N, Yanagisawa H, Watabe K, Utsunomiya K. Upregulation of galectin-3 in immortalized Schwann cells IFRS1 under diabetic conditions. Neurosci Res 2015; 92:80-5. [DOI: 10.1016/j.neures.2014.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/23/2014] [Accepted: 11/27/2014] [Indexed: 01/08/2023]
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Zhu T, Yu D, Feng J, Wu X, Xiang L, Gao H, Zhang X, Wei M. GDNF and NT-3 induce progenitor bone mesenchymal stem cell differentiation into neurons in fetal gut culture medium. Cell Mol Neurobiol 2014; 35:255-64. [PMID: 25301495 DOI: 10.1007/s10571-014-0120-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Accepted: 09/27/2014] [Indexed: 12/20/2022]
Abstract
With the increasing use of bone marrow mesenchymal stem cells (BMSCs) in cell therapies, factors regulating BMSC differentiation have become the interest of current research. In this study, we investigated the effects of glial cell-derived neurotrophic factor (GDNF) and neurotrophin-3 (NT-3) on the course of BMSC differentiation. BMSCs were isolated from rat bone marrow and transfected with GDNF and NT-3 genes. Compared to mock-transfected BMSCs, GDNF and NT-3 induced BMSC differentiation to reveal neuron-like characteristics, i.e., the positive expression of neuronal marker MAP-2 and astrocyte marker GFAP, as detected by immunofluorescence assays. Semi-quantitative polymerase chain reaction (PCR) and western blot analyses showed that the increase of expression of GDNF and NT-3 in BMSCs also simultaneously elevated the mRNA expression of NSE, nestin, and MAP-2. Furthermore, the cell patch-clamp test demonstrated that the overexpression of GDNF and NT-3 in BMSCs enhanced voltage-activated potassium currents, implying that BMSCs possess great potential as a cell-based therapeutic candidate to treat neurological diseases.
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Affiliation(s)
- Tianqi Zhu
- Department of Pediatric Surgery, Tongji Hospital, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Hankou, Wuhan, China
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29
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Growth and Turning Properties of Adult Glial Cell–Derived Neurotrophic Factor Coreceptor α1 Nonpeptidergic Sensory Neurons. J Neuropathol Exp Neurol 2014; 73:820-36. [DOI: 10.1097/nen.0000000000000101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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30
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Zhou Y, Kaminski HJ, Gong B, Cheng G, Feuerman JM, Kusner L. RNA expression analysis of passive transfer myasthenia supports extraocular muscle as a unique immunological environment. Invest Ophthalmol Vis Sci 2014; 55:4348-59. [PMID: 24917137 DOI: 10.1167/iovs.14-14422] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
PURPOSE Myasthenia gravis demonstrates a distinct predilection for involvement of the extraocular muscles (EOM), and we have hypothesized that this may be due to a unique immunological environment. To assess this hypothesis, we took an unbiased approach to analyze RNA expression profiles in EOM, diaphragm, and extensor digitorum longus (EDL) in rats with experimentally acquired myasthenia gravis (EAMG). METHODS Experimentally acquired myasthenia gravis was induced in rats by intraperitoneal injection of antibody directed against the acetylcholine receptor (AChR), whereas control rats received antibody known to bind the AChR but not induce disease. After 48 hours, animals were killed and muscles analyzed by RNA expression profiling. Profiling results were validated using qPCR and immunohistochemical analysis. RESULTS Sixty-two genes common among all muscle groups were increased in expression. These fell into four major categories: 12.8% stress response, 10.5% immune response, 10.5% metabolism, and 9.0% transcription factors. EOM expressed 212 genes at higher levels, not shared by the other two muscles, and a preponderance of EOM gene changes fell into the immune response category. EOM had the most uniquely reduced genes (126) compared with diaphragm (26) and EDL (50). Only 18 downregulated genes were shared by the three muscles. Histological evaluation and disease load index (sum of fold changes for all genes) demonstrated that EOM had the greatest degree of pathology. CONCLUSIONS Our studies demonstrated that consistent with human myasthenia gravis, EOM demonstrates a distinct RNA expression signature from EDL and diaphragm, which is based on differences in the degree of muscle injury and inflammatory response.
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Affiliation(s)
- Yuefang Zhou
- Department of Ophthalmology and Visual Sciences, Washington University, St. Louis, Missouri, United States
| | - Henry J Kaminski
- Departments of Neurology, Pharmacology, and Physiology, George Washington University, Washington, DC, United States
| | - Bendi Gong
- Department of Pediatrics, Washington University, St. Louis, Missouri, United States
| | - Georgiana Cheng
- Department of Pathobiology, Cleveland Clinic, Cleveland, Ohio, United States
| | - Jason M Feuerman
- Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, United States
| | - Linda Kusner
- Departments of Neurology, Pharmacology, and Physiology, George Washington University, Washington, DC, United States
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Aliaghaei A, Khodagholi F, Ahmadiani A. Conditioned media of choroid plexus epithelial cells induces Nrf2-activated phase II antioxidant response proteins and suppresses oxidative stress-induced apoptosis in PC12 cells. J Mol Neurosci 2014; 53:617-25. [PMID: 24488602 DOI: 10.1007/s12031-014-0228-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 01/01/2014] [Indexed: 12/01/2022]
Abstract
Based on the critical role of the choroid plexus (CP) in detoxification processes in the central nervous system (CNS), herein we investigated the effect of choroid plexus epithelial cells conditioned media (CPECs-CM) under oxidative conditions. CPECs were isolated from rat brains, cultured, and the conditioned media were collected. Then pheochromocytoma neuron-like cells (PC12) were treated simultaneously with CPECs-CM and H2O2 as the oxidative stressor. Next, the effect of CPECs-CM on neurite outgrowth and cell differentiation in the presence of H2O2 was determined. Our results showed that CPECs-CM improved the expansion of neurites and differentiation in PC12 cells under oxidative stress conditions. Changes in apoptotic factors, nuclear factor erythroid 2-related factor 2 (Nrf2) and γ-glutamylcysteine synthetase as the highlighted pathway in the antioxidant defense system were determined by western blot. Also, the activity of antioxidant enzymes and lipid peroxidation level were determined. CPECs-CM-treated PC12 cells could survive after exposure to H2O2 by reduction of caspase-3 cleavage and Bax level and elevation of anti-apoptotic factor Bcl2. Our data also revealed that Nrf2 activation, and consequently its downstream protein levels, increased in the presence of CPECs-CM. Based on our data, we can conclude that CPECs-CM protects PC12 cells against oxidative stress and apoptosis. It seems that CPECs secrete antioxidative agents and neurotrophic factors that have a role in the health of the CNS.
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Affiliation(s)
- Abbas Aliaghaei
- NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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