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Nakadate K, Kawakami K. Immunohistochemical and Immunoelectron Microscopical Distribution of MEGF8 in the Mouse Central Nervous System. Cells 2023; 13:63. [PMID: 38201267 PMCID: PMC10778434 DOI: 10.3390/cells13010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024] Open
Abstract
Mutations in multiple epidermal growth factor-like domain 8 (MEGF8), a multidomain transmembrane protein encoded by a gene conserved across species, cause Carpenter's syndrome, which is associated with learning disabilities, mental health issues, and left-right patterning abnormalities. MEGF8 interacts with MGRN1, a protein that functions as an E3 ubiquitin ligase and is involved in multiple physiological and pathological processes. However, the mechanism underlying the distribution of MEGF8 in the central nervous system (CNS) and its cellular and subcellular locations remain unknown. This study aimed to map MEGF8 in the mouse CNS using a new antibody. We discovered that MEGF8 was distributed in the majority of neuronal cell somata across most CNS regions. High levels of MEGF8 were expressed in the neuropils of the CNS gray matter. Immunoelectron microscopy showed that MEGF8 was present in the synapses and around the outer mitochondrial membrane. These findings show that MEGF8 is uniformly distributed throughout the mouse CNS, and its distribution indicates that it plays a substantial role in synaptic and mitochondrial functions. To the best of our knowledge, this is the first study to document MEGF8 distribution in the CNS.
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Affiliation(s)
- Kazuhiko Nakadate
- Department of Basic Science, Educational and Research Center for Pharmacy, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose 204-8588, Tokyo, Japan;
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Liu MQ, Xue C, Li XH, Ding HQ, Zhang MY, Chen K, Li Y, Gao SZ, Xu XJ, Zhang WN. Mutation of the attractin gene impairs working memory in rats. Brain Behav 2023; 13:e2876. [PMID: 36621889 PMCID: PMC9927853 DOI: 10.1002/brb3.2876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/20/2022] [Accepted: 12/12/2022] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE Attractin (ATRN) is a widely expressed member of the cell adhesion and guidance protein family in humans that is closely related to cellular immunity and neurodevelopment. However, while previous studies in our laboratory have confirmed the effect of ATRN mutations on long-term memory, its specific role and the molecular mechanism by which it influences spatial cognition are poorly understood. METHODS This study aimed to examine the effect of ATRN mutations on working memory in water maze with a novel ATRN-mutant rat generated by the CRISPR/Cas9 system; the mutation involved the substitution of the 505th amino acid, glycine (G), with cysteine (C), namely, a mutation from GGC to TGC. The changes in myelin basic protein (MBP) expression in rats were also analyzed with the western blot. RESULTS The ATRN-G505C(KI/KI) rats exhibited significant increases in the required latency and distance traveled to locate the escape platform in a Morris water maze test of working memory. In addition, the expression of MBP was reduced in ATRN-mutant rats, as shown in the western blot analysis. CONCLUSION Our results indicate that ATRN gene mutations may directly lead to the impairment of working memory in the water maze; this impairment may be due to the inhibition of MBP expression, which in turn affects the spatial cognition.
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Affiliation(s)
- Meng-Qi Liu
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
| | - Cheng Xue
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China.,Department of Clinical Laboratory, Changzhou Second People's Hospital affiliated to Nanjing Medical University, Changzhou, P. R. China
| | - Xiao-Hui Li
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China.,Department of Clinical Laboratory, Xiangyang First People's Hospital, Hubei University of Medicine, Xiangyang, P. R. China
| | - Hong-Qun Ding
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
| | - Meng-Yu Zhang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
| | - Kai Chen
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
| | - Ying Li
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
| | - Shu-Zhan Gao
- Department of Psychiatry, the Affiliated Brain Hospital of Nanjing Medical University, Nanjing Brain Hospital, Nanjing, P. R. China
| | - Xi-Jia Xu
- Department of Psychiatry, the Affiliated Brain Hospital of Nanjing Medical University, Nanjing Brain Hospital, Nanjing, P. R. China
| | - Wei-Ning Zhang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, P. R. China
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Distribution and Localization of Mahogunin Ring Finger 1 in the Mouse Central Nervous System. Int J Mol Sci 2022; 23:ijms23168956. [PMID: 36012221 PMCID: PMC9408835 DOI: 10.3390/ijms23168956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Mahogunin ring finger 1 (MGRN1), an E3 ubiquitin, is involved in several physiological and neuropathological processes. Although mgrn1 mRNA is widely distributed in the central nervous system (CNS), detailed information on its cellular and subcellular localization is lacking and its physiological role remains unclear. In this study, we aimed to determine the distribution of MGRN1 in the mouse CNS using a newly produced antibody against MGRN1. We found that the MGRN1 protein was expressed in most neuronal cell bodies. An intense MGRN1 expression was also observed in the neuropil of the gray matter in different regions of the CNS, including the main olfactory bulb, cerebral cortex, caudate, putamen, thalamic nuclei, hypothalamic nuclei, medial eminence, superior colliculus, hippocampus, dentate gyrus, and spinal cord. Contrastingly, no MGRN1 expression was observed in glial cells. Double fluorescence and immunoelectron microscopic analyses revealed the intracellular distribution of MGRN1 in pre-synapses and near the outer membrane of the mitochondria in neurons. These findings indicate that MGRN1 is more widely expressed throughout the CNS; additionally, the intracellular expression of MGRN1 suggests that it may play an important role in synaptic and mitochondrial functions.
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Ehara A, Taguchi D, Nakadate K, Ueda S. Attractin deficiency causes metabolic and morphological abnormalities in slow-twitch muscle. Cell Tissue Res 2021; 384:745-756. [PMID: 33660050 DOI: 10.1007/s00441-021-03423-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 01/24/2021] [Indexed: 11/25/2022]
Abstract
Skeletal muscle fibers are classified as slow-twitch and fast-twitch fibers, which have different reactive oxygen species (ROS) metabolism and mitochondrial biogenesis. Recently, Attractin (Atrn), which encodes secreted (sAtrn) and transmembrane (mAtrn)-type proteins, has been shown to be involved in free radical scavenging. Although Atrn has been found in skeletal muscle, little is known about the expression levels and function of Atrn in each muscle fiber type. Therefore, we investigate sAtrn and mAtrn expression levels in the slow-twitch soleus (sol) and fast-twitch extensor digitorum longus (EDL) muscles as well as the morphology and expression levels of antioxidant enzymes and functional mitochondrial markers using Atrn-deficient muscles. Both types of Atrn were expressed in the sol and EDL. mAtrn was mainly expressed in the adult sol, whereas sAtrn expression levels did not differ between muscle types. Moreover, mAtrn in the sol was abundantly localized in the subsarcolemmal area, especially in the myoplasm near mitochondria. Atrn-deficient Zitter rats showed muscle fiber atrophy, myofibril misalignment, mitochondrial swelling and vacuolation in the sol but not EDL. Furthermore, the Atrn-deficient sol exhibited a marked reduction in antioxidant enzyme SOD1, GPx1, catalase and Prx6 and mitochondrial functional protein, UCP2, expression. Even Atrn-deficient EDL showed a significant reduction in Prx3, Prx6, UCP2 and UCP3 expression. These data indicate that Atrn-deficiency disturbs ROS metabolism in skeletal muscles. In particular, mAtrn is involved in metabolism in the slow-twitch sol muscle and mAtrn-deficiency may cause ROS imbalance, resulting in morphological abnormalities in the muscle.
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Affiliation(s)
- Ayuka Ehara
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kita-Kobayashi, Mibu, 321-0293, Tochigi, Japan.
| | - Daisuke Taguchi
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kita-Kobayashi, Mibu, 321-0293, Tochigi, Japan
- Department of Judo Therapy, Faculty of Medical Technology, Teikyo University, 1-1 Toyosatodai, Utsunomiya-shi, 320-8551, Tochigi, Japan
| | - Kazuhiko Nakadate
- Department of Basic Science, Educational and Research Center for Pharmacy , Meiji Pharmaceutical University , 2-522-1 Noshio, Kiyose-shi, 204- 8588, Tokyo, Japan
| | - Shuichi Ueda
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kita-Kobayashi, Mibu, 321-0293, Tochigi, Japan
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Taguchi D, Ehara A, Kadowaki T, Sakakibara SI, Nakadate K, Hirata K, Ueda S. Minocycline Alleviates Cluster Formation of Activated Microglia and Age-dependent Dopaminergic Cell Death in the Substantia Nigra of Zitter Mutant Rat. Acta Histochem Cytochem 2020; 53:139-146. [PMID: 33437100 PMCID: PMC7785462 DOI: 10.1267/ahc.20-00022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/12/2020] [Indexed: 11/22/2022] Open
Abstract
Microglial activation is a component of neurodegenerative pathology. Here, we examine whether activated microglia participate in age-related dopaminergic (DA) cell death in the substantia nigra pars compacta (SNc) of the zitter (zi/zi) rat, a mutant characterized by deletion of the attractin gene. Confocal microscopy with double-immunohistochemical staining revealed activated microglia-formed cell-clusters surrounding DA neurons in the SNc from 2 weeks after birth. An immunoelectron microscopic study showed that the cytoplasm of activated microglia usually contains phagosome-like vacuoles and lamellar inclusions. Expression levels of the pro-inflammatory cytokines interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and inducible nitric oxide synthase (iNOS) were increased in the midbrain of 2-month-old zi/zi rats. Chronic treatment with the anti-inflammatory agent minocycline altered the morphology of the microglia, reduced cluster formation by the microglia, and attenuated DA cell death in the SNc, and reduced the expression of IL-1β in the midbrain. These results indicate that activated microglia, at least in part and especially at the initial phase, contribute to DA cell death in the SNc of the zi/zi rat.
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Affiliation(s)
- Daisuke Taguchi
- Department of Judo Therapy, Faculty of Medical Technology, Teikyo University
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine
| | - Ayuka Ehara
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine
| | - Taro Kadowaki
- Department of Neurology, Dokkyo Medical University School of Medicine
| | - Shin-ichi Sakakibara
- Laboratory of Molecular Neurobiology, Institute of Applied Brain Sciences, Faculty of Human Sciences, Waseda University
| | - Kazuhiko Nakadate
- Department of Basic Science, Educational and Research Center for Pharmacy, Meiji Pharmaceutical University
| | - Koichi Hirata
- Department of Neurology, Dokkyo Medical University School of Medicine
| | - Shuichi Ueda
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine
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Wimmer I, Scharler C, Zrzavy T, Kadowaki T, Mödlagl V, Rojc K, Tröscher AR, Kitic M, Ueda S, Bradl M, Lassmann H. Microglia pre-activation and neurodegeneration precipitate neuroinflammation without exacerbating tissue injury in experimental autoimmune encephalomyelitis. Acta Neuropathol Commun 2019; 7:14. [PMID: 30704526 PMCID: PMC6357376 DOI: 10.1186/s40478-019-0667-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 01/26/2019] [Indexed: 12/26/2022] Open
Abstract
Human inflammatory or neurodegenerative diseases, such as progressive multiple sclerosis (MS), occur on a background of age-related microglia activation and iron accumulation as well as pre-existing neurodegeneration. Most experimental models for CNS diseases, however, are induced in rodents, which are naturally characterized by a homeostatic microglia phenotype, low cellular iron load and absence of neurodegeneration. Here, we show that naïve LEWzizi rats – Lewis rats with a zitter rat background – show a spontaneous phenotype partly mimicking the changes seen in human aging and particularly in the normal-appearing white and grey matter of patients with progressive MS. Using this model system, we further aimed to investigate (i) whether the acute monophasic MS model experimental autoimmune encephalomyelitis (EAE) transforms into chronic progressive disease and (ii) whether EAE-induced neuroinflammation and tissue damage aggravate on the LEWzizi background. We found that the pre-existing LEWzizi-specific pathology precipitated EAE-related neuroinflammation into forebrain areas, which are devoid of EAE lesions in normal Lewis rats. However, EAE-related tissue damage was neither modified by the LEWzizi-specific pathology nor did EAE-induced neuroinflammation modify the LEWzizi-related pathological process. Our data indicate that the interaction between pre-activated microglia and CD4+ autoreactive T cells during the induction and propagation of tissue damage in the CNS is limited.
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Aiki H, Wada T, Iba K, Oki G, Sohma H, Yamashita T, Kokai Y. Proteomics analysis of site- and stage-specific protein expression after peripheral nerve injury. J Orthop Sci 2018; 23:1070-1078. [PMID: 30100211 DOI: 10.1016/j.jos.2018.07.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 06/14/2018] [Accepted: 07/18/2018] [Indexed: 01/26/2023]
Abstract
BACKGROUND The peripheral nervous system has greater regenerative potential than the CNS. This fact suggests the existence of molecules that act as key factors in nerve regeneration during molecular changes in the peripheral nervous system. METHODS The right sciatic nerve of female Sprague-Dawley rats was exposed and transected at the mid-thigh level. Animals were sacrificed at 5, 10 or 35 days after nerve transection. Proximal and distal nerve segments (1-cm in length) were dissected. We then sought to observe overall molecular changes after peripheral nerve injury using a proteomic approach. For an overview of the identified proteins, each protein was classified according to its biological and molecular functions. We identified a number of proteins showing site- and stage-specific patterns of expression. RESULTS Both proximal and distal molecular changes at 5, 10 and 35 days after nerve transection were investigated, and a total of 2353 proteins were identified. Among the various expression patterns observed, aFGF and GAP-43 were found to increase in the proximal stump at 10 days after transection, and PN-1, RPL9 and prosaposin increased in the distal stump at 5 days after transection. Among these proteins, aFGF, GAP-43, PN-1 and prosaposin were found to be associated with nerve regeneration. CONCLUSION We demonstrated that aFGF, GAP-43, PN-1 and prosaposin expression increased at specific stages and in specific sites, such as the proximal or distal stump, after nerve transection by comprehensive measurement using proteomics analysis. We believe that these specific expression patterns might play important roles during regeneration after nerve injury.
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Affiliation(s)
- Hikono Aiki
- Department of Biomedical Engineering, Sapporo Medical University School of Medicine, Sapporo, Japan; Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takuro Wada
- Division of Orthopaedic Surgery, Saiseikai Otaru Hospital, Otaru, Japan
| | - Kousuke Iba
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
| | - Gosuke Oki
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hitoshi Sohma
- Department of Educational Development, Sapporo Medical University Center for Medical Education, Sapporo, Japan
| | - Toshihiko Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yasuo Kokai
- Department of Biomedical Engineering, Sapporo Medical University School of Medicine, Sapporo, Japan
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Role of neuronal nitric oxide synthase in slowly progressive dopaminergic neurodegeneration in the Zitter rat. Nitric Oxide 2018; 78:41-50. [DOI: 10.1016/j.niox.2018.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/02/2018] [Accepted: 05/20/2018] [Indexed: 12/21/2022]
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Akiyama H, Nakadate K, Sakakibara SI. Synaptic localization of the SUMOylation-regulating protease SENP5 in the adult mouse brain. J Comp Neurol 2018; 526:990-1005. [DOI: 10.1002/cne.24384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/04/2017] [Accepted: 12/11/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Hiroki Akiyama
- Laboratory for Molecular Neurobiology, Faculty of Human Sciences; Waseda University; Tokorozawa Saitama 359-1192 Japan
| | - Kazuhiko Nakadate
- Department of Basic Science; Educational and Research Center for Pharmacy, Meiji Pharmaceutical University; Kiyose Tokyo 204-858 Japan
| | - Shin-ichi Sakakibara
- Laboratory for Molecular Neurobiology, Faculty of Human Sciences; Waseda University; Tokorozawa Saitama 359-1192 Japan
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Yamaguchi T, Ehara A, Nakadate K, Ueda S. Tyrosine hydroxylase afferents to the interstitial nucleus of the posterior limb of the anterior commissure are neurochemically distinct from those projecting to neighboring nuclei. J Chem Neuroanat 2018; 90:98-107. [PMID: 29305898 DOI: 10.1016/j.jchemneu.2017.12.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 12/01/2017] [Accepted: 12/26/2017] [Indexed: 01/16/2023]
Abstract
The interstitial nucleus of the posterior limb of the anterior commissure (IPAC) is exclusively innervated by tyrosine hydroxylase-immunoreactive (TH-IR) fibers as observed in the other nuclei of the rat forebrain such as the striatum and nucleus accumbens. Distinguishing TH-IR afferents to the IPAC from those projecting to neighboring nuclei has been difficult. However, we previously showed that the TH-IR fibers projecting to the IPAC were invulnerable to neurodegeneration in zitter mutant rats, whereas almost all TH-IR afferents fibers to the dorsolateral striatum were lost, indicating that these two groups of TH-IR afferents have distinct neurochemical properties. Here, to explore this observation further, we injected Fluorogold (FG) retrograde tracers to identify neurons projecting to the IPAC or dorsal striatum. We also determined the distribution of attractin mRNA and protein, causative factors for the pathological phenotypes of zitter mutant rats, within the normal rat midbrain. In rats injected with FG into the dorsal striatum, we detected many FG-positive neurons in the ventral aspect of the substantia nigra pars compacta (SNC). In contrast, many FG-positive neurons were observed in the dorsal aspect of the SNC of rats injected with FG into the IPAC. Immunohistochemistry and in situ hybridization studies of intact animals revealed that both attractin mRNA and protein were expressed at higher levels in the ventral aspect of the SNC, whereas both attractin mRNA and protein were expressed at lower levels in the dorsal aspect of the SNC. Taken together, these results indicate that TH-IR afferents to the IPAC have distinct neurochemical properties from those to the striatum and may account for the differential vulnerability to neurodegeneration observed in zitter mutant rats.
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Affiliation(s)
- Tsuyoshi Yamaguchi
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Ayuka Ehara
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293, Japan
| | - Kazuhiko Nakadate
- Department of Basic Biology, Educational and Research Center for Pharmacy, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
| | - Shuichi Ueda
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293, Japan
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Cheng D, Ming Y, Li J, Chi Y, Li HG, Zou YJ, Xiong CL. Expression of Attractin in male reproductive tract of human and mice and its correlation with male reproduction. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY. MEDICAL SCIENCES = HUA ZHONG KE JI DA XUE XUE BAO. YI XUE YING DE WEN BAN = HUAZHONG KEJI DAXUE XUEBAO. YIXUE YINGDEWEN BAN 2014; 34:745-749. [PMID: 25318887 DOI: 10.1007/s11596-014-1346-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 08/21/2014] [Indexed: 11/26/2022]
Abstract
The expression of Attractin mRNA and protein in testis and semen of human and male mice was investigated. Human testis and semen samples were all collected from Reproductive Center of Renmin Hospital, Wuhan University in December, 2012. Testis samples were collected from 7 cases of obstructive azoospermias when they were subjected to diagnosed testis biopsy, and 30 normal human semen samples were obtained from those cases of semen analysis. Adult mice testis tissues were obtained from 10 2-month-old male BALB/c mice, and 60 male mice at different ages were classified into 10 groups (day 1, 5, 10, 15, 21, 28, 35, 42, 56, and 120 respectively, n=6 each). The expression of Attractin mRNA and protein in testis was detected by RT-PCR and Western blotting respectively. Human semen samples were centrifuged into sperm plasma (SP) and sperm extract (SE), and mice sperm samples were collected from the epididymis of 10 adult male BALB/c mice. Western blotting was used to determine the Attractin protein expression level. Attractin mRNA and protein were expressed in the testis of both patients with obstructive azoospermias and adult Bcl/B mice. Quantitative RT-PCR revealed that no Attractin mRNA was detectable in day 1 male BALB/c mice group. The Attractin mRNA and protein levels were low on the day 10, and increased with age until day 56. On the day 120, the expression levels of Attractin were decreased. As for human semen samples, Attractin protein was expressed in both SP and SE, but didn't exist in samples from the epididymis of male BALB/c mice. It was suggested that Attractin acted as a novel active substance and was involved in male reproduction in both human and BALB/c mice, but it exerted a different expression profile in different mammal species.
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Affiliation(s)
- Dan Cheng
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yu Ming
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jie Li
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yan Chi
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hong-Gang Li
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yu-Jie Zou
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Cheng-Liang Xiong
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Hashimoto KI, Ueda S, Ehara A, Sakakibara SI, Yoshimoto K, Hirata K. Neuroprotective effects of melatonin on the nigrostriatal dopamine system in the zitter rat. Neurosci Lett 2012; 506:79-83. [DOI: 10.1016/j.neulet.2011.10.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2011] [Revised: 10/19/2011] [Accepted: 10/20/2011] [Indexed: 10/15/2022]
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Liu Y, Teng X, Yang X, Song Q, Lu R, Xiong J, Liu B, Zeng N, Zeng Y, Long J, Cao R, Lin Y, He Q, Chen P, Lu M, Liang S. Shotgun Proteomics and Network Analysis between Plasma Membrane and Extracellular Matrix Proteins from Rat Olfactory Ensheathing Cells. Cell Transplant 2010; 19:133-46. [PMID: 20350363 DOI: 10.3727/096368910x492607] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Olfactory ensheathing cells (OECs) are a special type of glial cells that have characteristics of both astrocytes and Schwann cells. Evidence suggests that the regenerative capacity of OECs is induced by soluble, secreted factors that influence their microenvironment. These factors may regulate OECs self-renewal and/or induce their capacity to augment spinal cord regeneration. Profiling of plasma membrane and extracellular matrix through a high-throughput expression proteomics approach was undertaken to identify plasma membrane and extracellular matrix proteins of OECs under serum-free conditions. 1D-shotgun proteomics followed with gene ontology (GO) analysis was used to screen proteins from primary culture rat OECs. Four hundred and seventy nonredundant plasma membrane proteins and 168 extracellular matrix proteins were identified, the majority of which were never before reported to be produced by OECs. Furthermore, plasma membrane and extracellular proteins were classified based on their protein–protein interaction predicted by STRING quantitatively integrates interaction data. The proteomic profiling of the OECs plasma membrane proteins and their connection with the secretome in serum-free culture conditions provides new insights into the nature of their in vivo microenvironmental niche. Proteomic analysis for the discovery of clinical biomarkers of OECs mechanism warrants further study.
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Affiliation(s)
- Yisong Liu
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Xiaohua Teng
- Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of PLA), Changsha, P.R. China
| | - Xiaoxu Yang
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Qing Song
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Rong Lu
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Jixian Xiong
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Bo Liu
- Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of PLA), Changsha, P.R. China
| | - Nianju Zeng
- Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of PLA), Changsha, P.R. China
| | - Yu Zeng
- Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of PLA), Changsha, P.R. China
| | - Jia Long
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Rui Cao
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Yong Lin
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Quanze He
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Ping Chen
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
| | - Ming Lu
- Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of PLA), Changsha, P.R. China
| | - Songping Liang
- Key laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha, P.R. China
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Izawa T, Yamate J, Franklin RJ, Kuwamura M. Abnormal myelinogenesis both in the white and gray matter of the attractin-deficient mv rat. Brain Res 2010; 1312:145-55. [DOI: 10.1016/j.brainres.2009.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 11/10/2009] [Accepted: 11/11/2009] [Indexed: 10/20/2022]
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15
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Li J, Wang S, Huang S, Cheng D, Shen S, Xiong C. Attractin gene deficiency contributes to testis vacuolization and sperm dysfunction in male mice. ACTA ACUST UNITED AC 2009; 29:750-4. [DOI: 10.1007/s11596-009-0616-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Indexed: 02/03/2023]
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16
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Ueda S, Sakakibara SI, Kadowaki T, Naitoh T, Hirata K, Yoshimoto K. Chronic treatment with melatonin attenuates serotonergic degeneration in the striatum and olfactory tubercle of zitter mutant rats. Neurosci Lett 2008; 448:212-6. [PMID: 18955113 DOI: 10.1016/j.neulet.2008.10.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Revised: 10/16/2008] [Accepted: 10/17/2008] [Indexed: 10/21/2022]
Abstract
The effects of chronic treatment with the antioxidant hormone melatonin on degeneration of serotonergic fibers were studied in the striatum and olfactory tubercle of the zitter rat, which shows a loss-of-function mutation of the glycosylated transmembrane protein attractin. In these animals, serotonergic fibers in the striatum and olfactory tubercle undergo spontaneous and progressive degeneration as a result of abnormal metabolism of reactive oxygen species. Homozygous zitter (zi/zi) rats were provided ad libitum access to drinking water containing melatonin for 9 months (M) after weaning. High-performance liquid chromatography analysis revealed that melatonin treatment significantly increased serotonin in the caudate-putamen, (CPU), nucleus accumbens (NA) and olfactory tubercle (OT). Immunohistochemical staining for serotonin was consistent with the neurochemical data and further demonstrated substantially increased numbers of serotonergic nerve terminals in these areas. Aberrant serotonergic fibers characterized by swollen varicosities (>1 microm in diameter) were observed in the CPU and NA of 10 M zi/zi rats. The number of these fibers decreased after melatonin treatment ended. Furthermore, hyperinnervation of serotonergic fibers was observed in the OT of melatonin-treated zi/zi rats. These results suggest that melatonin protects serotonergic fibers and terminals in zitter rats and/or promotes their neuroplasticity.
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Affiliation(s)
- Shiuchi Ueda
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, Mubu, Tochigi 321-0293, Japan.
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