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Miyazaki K, Hirasawa Y, Aga M, Aiko N, Hamakawa Y, Taniguti Y, Misumi Y, Agemi Y, Ishii M, Shimokawa T, Okamoto H. P33.08 Granulocyte Colony-Stimulating Factor-Producing Lung Cancer With Highly Expresses PD-L1 Protein Expression Level. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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2
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Misumi Y, Shimokawa T, Okamoto H, Atagi S, Tanaka H, Goto K, Nakagawa K, Hida T, Yamamoto N, Hosomi Y, Kato T, Okamoto I, Ohe Y. P2.15-004 Underrepresentation of Elderly Patients with ED-SCLC as Clinical Trial Candidates (JCOG1201/TORG1528). J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Kato Y, Yamashita T, Ueda M, Masuda T, Misumi Y, Nomura T, Kosaka T, Ando Y. Tafamidis or liver transplantation: Which should be chosen for hereditary transthyretin amyloidosis? J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ueda M, Misumi Y, Masuda T, Tsuda Y, Inoue Y, Tasaki M, Yamashita T, Ando Y. Amyloid formation and toxicity of fragmented transthyretin. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yamashita T, Mitsuharu U, Misumi Y, Masuda T, Nomura T, Tasaki M, Matsumoto S, Takamatsu K, Obayashi K, Ando Y. Genetical and clinical characteristics of hereditary transthyretin amyloidosis in endemic and non-endemic areas in japan. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Koike H, Nishi R, Ikeda S, Kawagashira Y, Iijima M, Misumi Y, Ando Y, Ikeda S, Katsuno M, Sobue G. Vasculopathy in familial amyloid polyneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Nomura T, Misumi Y, Ueda M, Masuda T, Yamashita T, Ando Y. Microvascular pathology of hereditary transthyretin amyloidosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Nagatoshi C, Masuda T, Ueda M, Misumi Y, Nomura T, Tasaki M, Yamashita T, Obayashi K, Ando Y. Pupillary autonomic nervous dysfunction in hereditary transthyretin amyloidosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Akimitsu H, Ueda M, Tasaki M, Matsumoto S, Mizukami M, Misumi Y, Masuda T, Yamashita T, Obayashi K, Ando Y. A novel amyloid protein causing systemic venous amyloidosis in the elderly. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Misumi Y, Kinoshita Y, Nomura T, Ueda M, Masuda T, Yamashita T, Ando Y. Effects of fibroblasts on the morphology of transthyretin amyloid deposition. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Misumi Y, Okamoto H, Naoki K, Hosomi Y, Ogura T, Masuda N, Minato K, Yokoyama T, Kishi K, Nishikawa M, Kato T, Seki N, Goto I, Watanabe K. Phase I/II study of induction chemotherapy using carboplatin plus irinotecan and sequential thoracic radiotherapy (TRT) for elderly patients with limited-stage small-cell lung cancer (LD-SCLC): The final results of TORG 0604. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw389.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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12
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Mori A, Yamashita S, Nakajima M, Hori H, Tawara A, Matsuo Y, Misumi Y, Ando Y. CMAP decrement as a potential diagnostic marker for ALS. Acta Neurol Scand 2016; 134:49-53. [PMID: 26434688 DOI: 10.1111/ane.12510] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVE We previously reported that decrement of compound muscle action potential (CMAP) by repetitive nerve stimulation (RNS) was greater in the median nerves than in the ulnar nerves of patients with amyotrophic lateral sclerosis (ALS). The aim of this study was to evaluate whether CMAP decrement by RNS is a feasible marker for the differentiation of ALS from other diseases. MATERIALS & METHODS We performed RNS in the median and ulnar nerves of 51 patients with ALS and 40 patients with other diseases. RESULTS The CMAP decrement was significantly greater in the median nerves of patients with ALS, compared to the disease control patients. In the median nerves of patients with ALS, CMAP decrement was significantly greater in the cervical region-onset group than in the other region-onset group. CONCLUSIONS The finding of CMAP decrement in the median nerves can be useful for differentiating ALS patients with cervical region onset from other controls with active neuropathic diseases.
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Affiliation(s)
- A. Mori
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - S. Yamashita
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - M. Nakajima
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - H. Hori
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - A. Tawara
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - Y. Matsuo
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - Y. Misumi
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
| | - Y. Ando
- Department of Neurology; Graduate School of Medical Sciences; Kumamoto University; Chuo-ku Kumamoto Japan
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Fujita A, Sato T, Koyama Y, Misumi Y. A reporter gene system for the precise measurement of promoter activity in Thermus thermophilus HB27. Extremophiles 2015; 19:1193-201. [PMID: 26400491 DOI: 10.1007/s00792-015-0789-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/10/2015] [Indexed: 10/23/2022]
Abstract
We developed a reporter gene system that enables precise analysis of promoter activity in Thermus thermophilus HB27. The reporter vector employs a promoterless β-galactosidase gene of Thermus spp. strain T2. However, T. thermophilus HB27 strain has three genes (TTP0042, TTP0220 and TTP0222) whose products have β-galactosidase activity, which would interfere with correct measurements of promoter activities. Thus, to eliminate this background activity, we disrupted all three of these genes to generate a host strain for measuring promoter expression as β-galactosidase activity. In addition, T. thermophilus strains also produce carotenoids called thermoxanthins that are yellow pigments. To avoid the influence of these carotenoids on the β-galactosidase assay, we also disrupted the phytoene synthase gene (crtB). The reporter gene system developed here is a powerful tool for studying transcriptional activity and the mechanisms that regulate gene expression in T. thermophilus HB27. We also showed that the crtB gene cassette could be used in repeated gene-disruption experiments to screen transformants by colony colour, thus eliminating the need for antibiotic resistance markers.
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Affiliation(s)
- Atsushi Fujita
- Biomedical Research Institute, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan.
| | - Takaaki Sato
- Biomedical Research Institute, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan
| | - Yoshinori Koyama
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Yoshio Misumi
- Department of Cell Biology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
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Agemi Y, Miyazaki K, Misumi Y, Sato A, Ishii M, Nakamura Y, Shimokawa T, Okamoto H. 3049 Prospective evaluation of G8 and dementia screening scores (DSS) for frailty in elderly patients with lung cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31691-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Ishida R, Yamamoto A, Nakayama K, Sohda M, Misumi Y, Yasunaga T, Nakamura N. GM130 is a parallel tetramer with a flexible rod-like structure and N-terminally open (Y-shaped) and closed (I-shaped) conformations. FEBS J 2015; 282:2232-44. [DOI: 10.1111/febs.13271] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/09/2015] [Accepted: 03/16/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Ryuichi Ishida
- Faculty of Life Sciences; Kyoto Sangyo University; Japan
| | | | | | - Miwa Sohda
- Division of Oral Biochemistry; Graduate School of Medical and Dental Sciences; Niigata University; Japan
| | - Yoshio Misumi
- Cell Biology; Fukuoka University School of Medicine; Japan
| | - Takuo Yasunaga
- Department of Bioscience and Bioinformatics; Kyushu Institute of Technology; Fukuoka Japan
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Misumi Y, Okamoto H, Naoki K, Hosomi Y, Takagi Y, Kato T, Masuda N, Takakura A, Minato K, Miura Y, Yokoyama T, Takata S, Kishi K, Nishikawa M, Oshita F, Seki N, Goto I, Watanabe K. Phase I/II Study of Induction Chemotherapy of Carboplatin and Irinotecan Followed By Sequential Thoracic Radiotherapy (Trt) for Elderly Patients with Limited-Stage Small-Cell Lung Cancer (Ld-Sclc): Torg 0604. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu355.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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17
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Ishii A, Kanaumi T, Sohda M, Misumi Y, Zhang B, Kakinuma N, Haga Y, Watanabe K, Takeda S, Okada M, Ueno S, Kaneko S, Takashima S, Hirose S. Association of nonsense mutation in GABRG2 with abnormal trafficking of GABAA receptors in severe epilepsy. Epilepsy Res 2014; 108:420-32. [PMID: 24480790 DOI: 10.1016/j.eplepsyres.2013.12.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 12/07/2013] [Accepted: 12/16/2013] [Indexed: 11/29/2022]
Abstract
Mutations in GABRG2, which encodes the γ2 subunit of GABAA receptors, can cause both genetic epilepsy with febrile seizures plus (GEFS+) and Dravet syndrome. Most GABRG2 truncating mutations associated with Dravet syndrome result in premature termination codons (PTCs) and are stably translated into mutant proteins with potential dominant-negative effects. This study involved search for mutations in candidate genes for Dravet syndrome, namely SCN1A, 2A, 1B, 2B, GABRA1, B2, and G2. A heterozygous nonsense mutation (c.118C>T, p.Q40X) in GABRG2 was identified in dizygotic twin girls with Dravet syndrome and their apparently healthy father. Electrophysiological studies with the reconstituted GABAA receptors in HEK cells showed reduced GABA-induced currents when mutated γ2 DNA was cotransfected with wild-type α1 and β2 subunits. In this case, immunohistochemistry using antibodies to the α1 and γ2 subunits of GABAA receptor showed granular staining in the soma. In addition, microinjection of mutated γ2 subunit cDNA into HEK cells severely inhibited intracellular trafficking of GABAA receptor subunits α1 and β2, and retention of these proteins in the endoplasmic reticulum. The mutated γ2 subunit-expressing neurons also showed impaired axonal transport of the α1 and β2 subunits. Our findings suggested that different phenotypes of epilepsy, e.g., GEFS+ and Dravet syndrome (which share similar abnormalities in causative genes) are likely due to impaired axonal transport associated with the dominant-negative effects of GABRG2.
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Affiliation(s)
- Atsushi Ishii
- Department of Pediatrics, Fukuoka University, Fukuoka, Japan; Central Research Institute for the Molecular Pathomechanisms of Epilepsy, Fukuoka University, Fukuoka, Japan
| | - Takeshi Kanaumi
- Department of Pediatrics, Fukuoka University, Fukuoka, Japan; Central Research Institute for the Molecular Pathomechanisms of Epilepsy, Fukuoka University, Fukuoka, Japan
| | - Miwa Sohda
- Division of Oral Biochemistry, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yoshio Misumi
- Department of Cell Biology, Fukuoka University, Fukuoka, Japan
| | - Bo Zhang
- Department of Biochemistry, Fukuoka University, Fukuoka, Japan
| | - Naoto Kakinuma
- Department of Anatomy and Cell Biology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Japan
| | - Yoshiko Haga
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuyoshi Watanabe
- Faculty of Health and Medical Sciences, Aichi Shukutoku University, Nagakute, Japan
| | - Sen Takeda
- Department of Anatomy and Cell Biology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Japan
| | - Motohiro Okada
- Division of Neuroscience, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Shinya Ueno
- Rehabilitation Medicine, Institute of Brain Science, Japan
| | - Sunao Kaneko
- Department of Neuropsychiatry, Hirosaki University, Hirosaki, Japan; North Tohoku Epilepsy Center, Minato Hospital, Hachinohe, Japan
| | - Sachio Takashima
- Yanagawa Institute for Developmental Disabilities, Child Neurology, International University of Health and Welfare, Yanagawa, Japan
| | - Shinichi Hirose
- Department of Pediatrics, Fukuoka University, Fukuoka, Japan; Central Research Institute for the Molecular Pathomechanisms of Epilepsy, Fukuoka University, Fukuoka, Japan.
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Yokoyama T, Kunikane H, Okamoto H, Hida N, Shimokawa T, Sato A, Misumi Y, Agemi Y, Ishii M, Nishibeppu H, Fukushima Y, Ooishi R. Changes in Quality of Life Through the Intervention by a Palliative Care Team for Patients with Advanced Lung Cancer. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sohda M, Misumi Y, Tashiro K, Yamazaki M, Saku T, Oda K. Identification of a soluble isoform of human IL-17RA generated by alternative splicing. Cytokine 2013; 64:642-5. [PMID: 24084331 DOI: 10.1016/j.cyto.2013.09.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/27/2013] [Accepted: 09/06/2013] [Indexed: 12/01/2022]
Abstract
IL-17RA, a member of the interleukin (IL)-17 receptor family, is a single membrane-spanning protein that ubiquitously expressed on the cell surface. IL-17RA transduces IL-17A, IL-17F, and IL-17A/F heterodimer-mediated signals by forming a complex with IL-17RC, and also signals the IL-17E (also known as IL-25) response in combination with IL-17RB (also known as IL-25R). Previously, soluble isoforms of human IL-17RC and IL-17RB have been reported, but the existence of a soluble isoform of human IL-17RA has remained unclear. Here, we report the identification of a soluble isoform of human IL-17RA at the mRNA and protein levels. Reverse transcribed PCR experiments showed that the IL-17RA variant is generated by spliced out of exon 11 encoding the transmembrane region in a variety of human tissues. The soluble IL-17RA isoform was detected in the culture media of human cell lines by Western blotting. The existence of the soluble IL-17RA isoform sheds new light on the regulation of IL-17RA mediated responses.
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Affiliation(s)
- Miwa Sohda
- Division of Oral Biochemistry, Niigata University, Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan.
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Arasaki K, Takagi D, Furuno A, Sohda M, Misumi Y, Wakana Y, Inoue H, Tagaya M. A new role for RINT-1 in SNARE complex assembly at the trans-Golgi network in coordination with the COG complex. Mol Biol Cell 2013; 24:2907-17. [PMID: 23885118 PMCID: PMC3771952 DOI: 10.1091/mbc.e13-01-0014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Yeast Tip20, a subunit of the Dsl1 complex, is implicated in Golgi-to–endoplasmic reticulum retrograde transport. Differing from Tip20, its mammalian counterpart, RINT-1, is required for endosome-to–trans-Golgi network transport. RINT-1 in coordination with the COG complex regulates SNARE complex assembly at the trans-Golgi network. Docking and fusion of transport vesicles/carriers with the target membrane involve a tethering factor–mediated initial contact followed by soluble N-ethylmaleimide–sensitive factor attachment protein receptor (SNARE)–catalyzed membrane fusion. The multisubunit tethering CATCHR family complexes (Dsl1, COG, exocyst, and GARP complexes) share very low sequence homology among subunits despite likely evolving from a common ancestor and participate in fundamentally different membrane trafficking pathways. Yeast Tip20, as a subunit of the Dsl1 complex, has been implicated in retrograde transport from the Golgi apparatus to the endoplasmic reticulum. Our previous study showed that RINT-1, the mammalian counterpart of yeast Tip20, mediates the association of ZW10 (mammalian Dsl1) with endoplasmic reticulum–localized SNARE proteins. In the present study, we show that RINT-1 is also required for endosome-to–trans-Golgi network trafficking. RINT-1 uncomplexed with ZW10 interacts with the COG complex, another member of the CATCHR family complex, and regulates SNARE complex assembly at the trans-Golgi network. This additional role for RINT-1 may in part reflect adaptation to the demand for more diverse transport routes from endosomes to the trans-Golgi network in mammals compared with those in a unicellular organism, yeast. The present findings highlight a new role of RINT-1 in coordination with the COG complex.
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Affiliation(s)
- Kohei Arasaki
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan Division of Oral Biochemistry, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan Department of Cell Biology, Fukuoka University School of Medicine, Jonan-ku, Fukuoka 814-0180, Japan
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Fujita A, Misumi Y, Honda S, Sato T, Koyama Y. Construction of new cloning vectors that employ the phytoene synthase encoding gene for color screening of cloned DNA inserts in Thermus thermophilus. Gene 2013; 527:655-62. [PMID: 23845779 DOI: 10.1016/j.gene.2013.06.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/21/2013] [Accepted: 06/24/2013] [Indexed: 01/15/2023]
Abstract
Strains of Thermus thermophilus produce unique carotenoids called thermozeaxanthins and their colonies are light-yellow pigmented. Here, we developed a new cloning system allowing for the rapid and convenient detection of recombinants by color screening based on carotenoid production in T. thermophilus. We constructed two cloning vectors that overexpress the crtB gene encoding a phytoene synthase under the strong promoter of the slpA gene. Phytoene synthase is one of essential enzymes for the production of carotenoids. We also isolated a carotenoid-overproducing mutant that formed orange colonies. Because disruption of crtB in the carotenoid-overproducing mutant resulted in white colonies, we used the disruptant as a host strain. Whereas transformants carrying a new cloning vector, pTRK1-PRslpA-crtBcas, grew into unusual red-pigmented colonies probably because of the extreme accumulation of thermozeaxanthins, those carrying the vector with a foreign DNA inserts formed white colonies. Thus, recombinants can be detected easily by color screening (red/white screening) in T. thermophilus. This cloning system requires no additional chromogenic substrate in the medium. We also constructed a promoter-probe vector, pTRK1-crtBmcs-PP, employing the open reading frame of crtB with multiple cloning sites. Using this vector, a series of colony-color phenotypes is observed probably depending on promoter activities of foreign DNA inserts, which enables the rapid probing of promoters. These vectors are useful to simplify cloning procedures and to identify the promoters of different strengths in T. thermophilus.
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Affiliation(s)
- Atsushi Fujita
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan.
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Higurashi N, Uchida T, Lossin C, Misumi Y, Okada Y, Akamatsu W, Imaizumi Y, Zhang B, Nabeshima K, Mori MX, Katsurabayashi S, Shirasaka Y, Okano H, Hirose S. A human Dravet syndrome model from patient induced pluripotent stem cells. Mol Brain 2013; 6:19. [PMID: 23639079 PMCID: PMC3655893 DOI: 10.1186/1756-6606-6-19] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 04/03/2013] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Dravet syndrome is a devastating infantile-onset epilepsy syndrome with cognitive deficits and autistic traits caused by genetic alterations in SCN1A gene encoding the α-subunit of the voltage-gated sodium channel Na(v)1.1. Disease modeling using patient-derived induced pluripotent stem cells (iPSCs) can be a powerful tool to reproduce this syndrome's human pathology. However, no such effort has been reported to date. We here report a cellular model for DS that utilizes patient-derived iPSCs. RESULTS We generated iPSCs from a Dravet syndrome patient with a c.4933C>T substitution in SCN1A, which is predicted to result in truncation in the fourth homologous domain of the protein (p.R1645*). Neurons derived from these iPSCs were primarily GABAergic (>50%), although glutamatergic neurons were observed as a minor population (<1%). Current-clamp analyses revealed significant impairment in action potential generation when strong depolarizing currents were injected. CONCLUSIONS Our results indicate a functional decline in Dravet neurons, especially in the GABAergic subtype, which supports previous findings in murine disease models, where loss-of-function in GABAergic inhibition appears to be a main driver in epileptogenesis. Our data indicate that patient-derived iPSCs may serve as a new and powerful research platform for genetic disorders, including the epilepsies.
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Affiliation(s)
- Norimichi Higurashi
- Department of Pediatrics, School of Medicine, Fukuoka University, 45-1, 7-chome, Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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Sato A, Nogami N, Shinkai T, Kozuki T, Ogino A, Misumi Y, Hosomi Y, Shimokawa T, Hida N, Seki N, Honma C, Okamoto H, Shibuya M, Morita S, Watanabe K. A Phase I/II Trial of Erlotinib S-1 Therapy in Patients with Previously Treated Non-Small-Cell Lung Cancer: Thoracic Oncology Research Group (TORG) 0808/0913. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32390-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Fujita A, Misumi Y, Koyama Y. Two versatile shuttle vectors for Thermus thermophilus–Escherichia coli containing multiple cloning sites, lacZα gene and kanamycin or hygromycin resistance marker. Plasmid 2012; 67:272-5. [DOI: 10.1016/j.plasmid.2011.12.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 12/27/2011] [Accepted: 12/28/2011] [Indexed: 10/14/2022]
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Yamashita T, Ando Y, Okamoto S, Misumi Y, Hirahara T, Ueda M, Obayashi K, Nakamura M, Jono H, Shono M, Asonuma K, Inomata Y, Uchino M. Long-term survival after liver transplantation in patients with familial amyloid polyneuropathy. Neurology 2012; 78:637-43. [DOI: 10.1212/wnl.0b013e318248df18] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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26
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Misumi Y, Ando Y, Ueda M, Obayashi K, Jono H, Su Y, Yamashita T, Uchino M. Relationship between amyloid fibril formation and overproduction of basement membrane components in familial amyloidotic polyneuropathy (FAP). Amyloid 2011; 18 Suppl 1:22-3. [PMID: 21838419 DOI: 10.3109/13506129.2011.574354007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Y Misumi
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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27
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Jono H, Anno T, Misumi Y, Mori Y, Motoyama K, Ueda M, Horibata Y, Shono M, Obayashi K, Arima H, Ando Y. Effect of cyclodextrins on transthyretin amyloid formation in transthyretin-related amyloidosis. Amyloid 2011; 18 Suppl 1:58-9. [PMID: 21838432 DOI: 10.3109/13506129.2011.574354020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- H Jono
- Department of Diagnostic Medicine, Graduate School of life Sciences, Kumamoto University, Kumamoto, Japan,
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Guo J, Jono H, Kugimiya T, Saito S, Maruyama T, Misumi Y, Hoshii Y, Su Y, Shono M, Ueda M, Obayashi K, Otagiri M, Ando Y. Antioxidative effect of albumin on amyloid fibril formation in transthyretin-related amyloidosis. Amyloid 2011; 18 Suppl 1:17-8. [PMID: 21838417 DOI: 10.3109/13506129.2011.574354005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- J Guo
- Department of Diagnostic Medicine, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
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Kumabe Y, Miura A, Yamashita T, Oshima T, Misumi Y, Ueda M, Obayashi K, Horibata Y, Jono H, Ando Y, Uchino M. A homozygote case of familial amyloid polyneuropathy amyloidgenic transthyretin Val30Met in a non-endemic area. Amyloid 2011; 18 Suppl 1:169-70. [PMID: 21838475 DOI: 10.3109/13506129.2011.574354063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Y Kumabe
- Department of Neurology, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
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30
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Su Y, Horibata Y, Ueda M, Tasaki M, Misumi Y, Guo J, Shono M, Jono H, Obayashi K, Ogawa H, Ando Y. Transthyretin-derived amyloid deposition in the heart of an elderly Japanese population. Amyloid 2011; 18 Suppl 1:180-1. [PMID: 21838479 DOI: 10.3109/13506129.2011.574354067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Y Su
- Department of Diagnostic Medicine, Graduate School of Medical Sciences, Kumamoto University, Japan
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31
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Oku M, Tanakura S, Uemura A, Sohda M, Misumi Y, Taniguchi M, Wakabayashi S, Yoshida H. Novel Cis-acting Element GASE Regulates Transcriptional Induction by the Golgi Stress Response. Cell Struct Funct 2011; 36:1-12. [DOI: 10.1247/csf.10014] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Masaya Oku
- Department of Biophysics, Graduate School of Science, Kyoto University
| | - Soichiro Tanakura
- Department of Biochemistry and Molecular Biology, Graduate School of Life Science, University of Hyogo
| | - Aya Uemura
- Department of Biophysics, Graduate School of Science, Kyoto University
| | - Miwa Sohda
- Division of Oral Biochemistry, Graduate School of Medical and Dental Sciences, Niigata University
| | - Yoshio Misumi
- Department of Biochemistry, School of Medicine, Fukuoka University
| | - Mai Taniguchi
- Department of Biochemistry and Molecular Biology, Graduate School of Life Science, University of Hyogo
| | - Sadao Wakabayashi
- Department of Biochemistry and Molecular Biology, Graduate School of Life Science, University of Hyogo
| | - Hiderou Yoshida
- Department of Biophysics, Graduate School of Science, Kyoto University
- Department of Biochemistry and Molecular Biology, Graduate School of Life Science, University of Hyogo
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32
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Tanimoto K, Suzuki K, Jokitalo E, Sakai N, Sakaguchi T, Tamura D, Fujii G, Aoki K, Takada S, Ishida R, Tanabe M, Itoh H, Yoneda Y, Sohda M, Misumi Y, Nakamura N. Characterization of YIPF3 and YIPF4, cis-Golgi Localizing Yip Domain Family Proteins. Cell Struct Funct 2011; 36:171-85. [DOI: 10.1247/csf.11002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Kouji Tanimoto
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Kurumi Suzuki
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Eija Jokitalo
- Electron Microscopy Unit, Institute of Biotechnology, University of Helsinki
| | - Noriko Sakai
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Tomoaki Sakaguchi
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Daisuke Tamura
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Gourou Fujii
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Kenji Aoki
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Saya Takada
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Ryuichi Ishida
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University
| | - Masako Tanabe
- Department of Life Science, Graduate School of Engineering and Resource Science, Akita University
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University
| | - Hideaki Itoh
- Department of Life Science, Graduate School of Engineering and Resource Science, Akita University
| | - Yukio Yoneda
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
| | - Miwa Sohda
- Division of Oral Biochemistry, Niigata University Graduate School of Medical and Dental Sciences
| | - Yoshio Misumi
- Department of Cell Biology, Fukuoka University School of Medicine
| | - Nobuhiro Nakamura
- Graduate School of Natural Science and Technology and School of Pharmacy, Kanazawa University
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University
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Sohda M, Misumi Y, Yamamoto A, Nakamura N, Ogata S, Sakisaka S, Hirose S, Ikehara Y, Oda K. Interaction of Golgin-84 with the COG complex mediates the intra-Golgi retrograde transport. Traffic 2010; 11:1552-66. [PMID: 20874812 DOI: 10.1111/j.1600-0854.2010.01123.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The coiled-coil Golgi membrane protein golgin-84 functions as a tethering factor for coat protein I (COPI) vesicles. Protein interaction analyses have revealed that golgin-84 interacts with another tether, the conserved oligomeric Golgi (COG) complex, through its subunit Cog7. Therefore, we explored the function of golgin-84 as the tether for COPI vesicles of intra-Golgi retrograde traffic. First, glycosylic maturation of both plasma membrane (CD44) and lysosomal (lamp1) glycoproteins was distorted in golgin-84 knockdown (KD) cells. The depletion of golgin-84 caused fragmentation of the Golgi with the mislocalization of Golgi resident proteins, resulting in the accumulation of vesicles carrying intra-Golgi soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs) and cis-Golgi membrane protein GPP130. Similar observations were obtained by diminution of the COG complex, suggesting a strong correlation between the two tethers. Indeed, COG complex-dependent (CCD) vesicles that accumulate in Cog3 or Cog7 KD cells carried golgin-84. Surprisingly, the interaction between golgin-84 and another candidate tethering partner CASP (CDP/cut alternatively spliced product) decreased in Cog3 KD cells. These results indicate that golgin-84 on COPI vesicles interact with the COG complex before SNARE assembly, suggesting that the interaction of golgin-84 with COG plays an important role in the tethering process of intra-Golgi retrograde vesicle traffic.
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Affiliation(s)
- Miwa Sohda
- Division of Oral Biochemistry, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan
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Yamashita T, Oshima T, Misumi Y, Okamoto S, Ueda M, Obayashi K, Jono H, Ando Y, Uchino M. P4.57 Muscular amyloid angiopathy associated with amyloidogenic transthyretin Ser50Ile and Tyr114Cys. Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fujita A, Misumi Y. Fission yeast syt22 protein, a putative Arf guanine nucleotide exchange factor, is necessary for new end take off. FEMS Microbiol Lett 2009; 294:191-7. [PMID: 19431238 DOI: 10.1111/j.1574-6968.2009.01566.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
In fission yeast Schizosaccharomyces pombe, the directions of cell growth change from monopolar to bipolar in character, which is known as 'new end take off ' (NETO). We previously found that arf6p, a member (class III) of the ADP-ribosylation factor (Arf) family, is necessary for NETO in fission yeast. Here we report the characterization of an S. pombe gene, syt22(+), encoding a putative Arf guanine nucleotide exchange factor (GEF). The syt22 protein contains a Sec7 domain and a PH domain conserved in the mammalian EFA6 GEF family, and has high similarity to Yel1p, which was identified as a GEF for Arf3p (class III Arf) in Saccharomyces cerevisiae. syt22Delta cells, like arf6Delta cells, completely failed to undergo NETO. Syt22p uniformly localizes to the cell periphery. Its localization is not dependent on microtubules, actin cytoskeletons or arf6p. We hypothesize that syt22p functions as a GEF for arf6p.
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Yoshida Y, Suzuki K, Yamamoto A, Sakai N, Bando M, Tanimoto K, Yamaguchi Y, Sakaguchi T, Akhter H, Fujii G, Yoshimura SI, Ogata S, Sohda M, Misumi Y, Nakamura N. YIPF5 and YIF1A recycle between the ER and the Golgi apparatus and are involved in the maintenance of the Golgi structure. Exp Cell Res 2008; 314:3427-43. [PMID: 18718466 DOI: 10.1016/j.yexcr.2008.07.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 07/28/2008] [Accepted: 07/28/2008] [Indexed: 11/29/2022]
Abstract
Yip1p/Yif1p family proteins are five-span transmembrane proteins localized in the Golgi apparatus and the ER. There are nine family members in humans, and YIPF5 and YIF1A are the human orthologs of budding yeast Yip1p and Yif1p, respectively. We raised antisera against YIPF5 and YIF1A and examined the localization of endogenous proteins in HeLa cells. Immunofluorescence, immunoelectron microscopy and subcellular fractionation analysis suggested that YIPF5 and YIF1A are not restricted to ER exit sites but also localized in the ER-Golgi intermediate compartment (ERGIC) and some in the cis-Golgi at steady state. Along with ERGIC53, YIPF5 and YIF1A remained in the cytoplasmic punctate structures after brefeldin A treatment, accumulated in the ERGIC and the cis-Golgi after treatment with AlF4- and accumulated in the ER when ER to Golgi transport was inhibited by Sar1(H79G). These results supported the localization of YIPF5 and YIF1A in the ERGIC and the cis-Golgi, and strongly suggested that they are recycling between the ER and the Golgi apparatus. Analysis by blue native PAGE and co-immunoprecipitation showed that YIPF5 and YIF1A form stable complexes of three different sizes. Interestingly, the knockdown of YIPF5 or YIF1A caused partial disassembly of the Golgi apparatus suggesting that YIPF5 and YIF1A are involved in the maintenance of the Golgi structure.
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Affiliation(s)
- Yumi Yoshida
- Division of Life Sciences, Graduate School of Natural Science and Technology and Faculty of Pharmaceutical Sciences, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
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Kim J, Nadal MS, Clemens AM, Baron M, Jung SC, Misumi Y, Rudy B, Hoffman DA. Kv4 accessory protein DPPX (DPP6) is a critical regulator of membrane excitability in hippocampal CA1 pyramidal neurons. J Neurophysiol 2008; 100:1835-47. [PMID: 18667548 DOI: 10.1152/jn.90261.2008] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A-type K+ currents have unique kinetic and voltage-dependent properties that allow them to finely tune synaptic integration, action potential (AP) shape and firing patterns. In hippocampal CA1 pyramidal neurons, Kv4 channels make up the majority of the somatodendritic A-type current. Studies in heterologous expression systems have shown that Kv4 channels interact with transmembrane dipeptidyl-peptidase-like proteins (DPPLs) to regulate the surface trafficking and biophysical properties of Kv4 channels. To investigate the influence of DPPLs in a native system, we conducted voltage-clamp experiments in patches from CA1 pyramidal neurons expressing short-interfering RNA (siRNA) targeting the DPPL variant known to be expressed in hippocampal pyramidal neurons, DPPX (siDPPX). In accordance with heterologous studies, we found that DPPX downregulation in neurons resulted in depolarizing shifts of the steady-state inactivation and activation curves, a shallower conductance-voltage slope, slowed inactivation, and a delayed recovery from inactivation for A-type currents. We carried out current-clamp experiments to determine the physiological effect of the A-type current modifications by DPPX. Neurons expressing siDPPX exhibited a surprisingly large reduction in subthreshold excitability as measured by a decrease in input resistance, delayed time to AP onset, and an increased AP threshold. Suprathreshold DPPX downregulation resulted in slower AP rise and weaker repolarization. Computer simulations supported our experimental results and demonstrated how DPPX remodeling of A-channel properties can result in opposing sub- and suprathreshold effects on excitability. The Kv4 auxiliary subunit DPPX thus acts to increase neuronal responsiveness and enhance signal precision by advancing AP initiation and accelerating both the rise and repolarization of APs.
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Affiliation(s)
- Jinhyun Kim
- Molecular Neurophysiology and Biophysics Unit, Laboratory of Cellular and Synaptic Neurophysiology, National Institute of Child Health and Human Development, National Institutes of Health, 35 Lincoln Dr., Rm. 3C-905, Bethesda, MD 20892-3715, USA
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Numa N, Ishida Y, Nasu M, Sohda M, Misumi Y, Noda T, Oda K. Molecular basis of perinatal hypophosphatasia with tissue-nonspecific alkaline phosphatase bearing a conservative replacement of valine by alanine at position 406. FEBS J 2008; 275:2727-37. [DOI: 10.1111/j.1742-4658.2008.06414.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Yamashita T, Ando Y, Ueda M, Nakamura M, Okamoto S, Zeledon ME, Hirahara T, Hirai T, Ueda A, Misumi Y, Obayashi K, Inomata H, Uchino M. Effect of liver transplantation on transthyretin Tyr114Cys-related cerebral amyloid angiopathy. Neurology 2008; 70:123-8. [PMID: 18180441 DOI: 10.1212/01.wnl.0000287089.28847.b5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Patients with amyloidogenic transthyretin (ATTR) Tyr114Cys develop amyloid deposits in cerebral blood vessels, cerebral hemorrhage, and rapidly progressive dementia that presents with hereditary cerebral amyloid angiopathy (CAA). However, no treatment has been identified for CAA. Although liver transplantation has become an acceptable treatment of TTR-related amyloidosis, liver transplantation may not successfully treat CNS manifestations of the disorder. In this study, we examined the effect of liver transplantation on these manifestations of TTR-related CAA. METHODS We compared clinical courses of three patients with CAA associated with ATTR Tyr114Cys who underwent liver transplantation with those of five patients with the disorder who did not undergo liver transplantation. RESULTS The mortality and occurrence of cerebral hemorrhage and dementia in patients having transplantations were reduced compared with those in patients not having transplantations. The two groups did not differ with regard to the frequency of episodes of fluctuating consciousness and TIAs. The group undergoing transplantations had significantly smaller volumes of intracranial hemorrhage than did the no-transplantation group. CONCLUSION Liver transplantation was effective for CNS manifestations of cerebral amyloid angiopathy associated with amyloidogenic transthyretin Tyr114Cys.
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Affiliation(s)
- T Yamashita
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan.
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Sohda M, Misumi Y, Yoshimura SI, Nakamura N, Fusano T, Ogata S, Sakisaka S, Ikehara Y. The interaction of two tethering factors, p115 and COG complex, is required for Golgi integrity. Traffic 2007; 8:270-84. [PMID: 17274799 DOI: 10.1111/j.1600-0854.2006.00530.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The vesicle-tethering protein p115 functions in endoplasmic reticulum-Golgi trafficking. We explored the function of homologous region 2 (HR2) of the p115 head domain that is highly homologous with the yeast counterpart, Uso1p. By expression of p115 mutants in p115 knockdown (KD) cells, we found that deletion of HR2 caused an irregular assembly of the Golgi, which consisted of a cluster of mini-stacked Golgi fragments, and gathered around microtubule-organizing center in a microtubule-dependent manner. Protein interaction analyses revealed that p115 HR2 interacted with Cog2, a subunit of the conserved oligomeric Golgi (COG) complex that is known another putative cis-Golgi vesicle-tethering factor. The interaction between p115 and Cog2 was found to be essential for Golgi ribbon reformation after the disruption of the ribbon by p115 KD or brefeldin A treatment and recovery by re-expression of p115 or drug wash out, respectively. The interaction occurred only in interphase cells and not in mitotic cells. These results strongly suggested that p115 plays an important role in the biogenesis and maintenance of the Golgi by interacting with the COG complex on the cis-Golgi in vesicular trafficking.
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Affiliation(s)
- Miwa Sohda
- Department of Cell Biology, Fukuoka University School of Medicine, Jonan-ku, Fukuoka 814-0180, Japan
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Dumin E, Bendikov I, Foltyn VN, Misumi Y, Ikehara Y, Kartvelishvily E, Wolosker H. Modulation of D-serine levels via ubiquitin-dependent proteasomal degradation of serine racemase. J Biol Chem 2006; 281:20291-302. [PMID: 16714286 DOI: 10.1074/jbc.m601971200] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mammalian serine racemase is a brain-enriched enzyme that converts L- into D-serine in the nervous system. D-Serine is an endogenous co-agonist at the "glycine site" of N-methyl D-aspartate (NMDA) receptors that is required for the receptor/channel opening. Factors regulating the synthesis of D-serine have implications for the NMDA receptor transmission, but little is known on the signals and events affecting serine racemase levels. We found that serine racemase interacts with the Golgin subfamily A member 3 (Golga3) protein in yeast two-hybrid screening. The interaction was confirmed in vitro with the recombinant proteins in co-transfected HEK293 cells and in vivo by co-immunoprecipitation studies from brain homogenates. Golga3 and serine racemase co-localized at the cytosol, perinuclear Golgi region, and neuronal and glial cell processes in primary cultures. Golga3 significantly increased serine racemase steady-state levels in co-transfected HEK293 cells and primary astrocyte cultures. This observation led us to investigate mechanisms regulating serine racemase levels. We found that serine racemase is degraded through the ubiquitin-proteasomal system in a Golga3-modulated manner. Golga3 decreased the ubiquitylation of serine racemase both in vitro and in vivo and significantly increased the protein half-life in pulse-chase experiments. Our results suggest that the ubiquitin system is a main regulator of serine racemase and D-serine levels. Modulation of serine racemase degradation, such as that promoted by Golga3, provides a new mechanism for regulating brain d-serine levels and NMDA receptor activity.
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Affiliation(s)
- Elena Dumin
- Department of Biochemistry, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel
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Sohda M, Misumi Y, Yoshimura SI, Nakamura N, Fusano T, Sakisaka S, Ogata S, Fujimoto J, Kiyokawa N, Ikehara Y. Depletion of vesicle-tethering factor p115 causes mini-stacked Golgi fragments with delayed protein transport. Biochem Biophys Res Commun 2005; 338:1268-74. [PMID: 16256943 DOI: 10.1016/j.bbrc.2005.10.084] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2005] [Accepted: 10/14/2005] [Indexed: 12/23/2022]
Abstract
Depletion of p115 with small interfering RNA caused fragmentation of the Golgi apparatus, resulting in dispersed distribution of stacked short cisternae and a vesicular structure (mini-stacked Golgi). The mini-stacked Golgi with cis- and trans-organization is functional in protein transport and glycosylation, although secretion is considerably retarded in p115 knockdown cells. The fragmented Golgi was further disrupted by treatment with breferdin A and reassembled into the mini-stacked Golgi by removal of the drug, as observed in control cells. In addition, p115 knockdown cells maintained retrograde transport from the Golgi to the endoplasmic reticulum, although the rate was not as efficient as in control cells. While no alternation of microtubule networks was found in p115 knockdown cells, the fragmented Golgi resembled those in cells treated with anti-microtubule drugs. The results suggest that p115 is involved in vesicular transport between endoplasmic reticulum and the Golgi, along with microtubule networks.
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Affiliation(s)
- Miwa Sohda
- Department of Cell Biology, Fukuoka University School of Medicine, Jonan-ku, Fukuoka 814-0180, Japan
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Goto H, Terunuma M, Kanematsu T, Misumi Y, Moss SJ, Hirata M. Direct interaction of N-ethylmaleimide-sensitive factor with GABAA receptor β subunits. Mol Cell Neurosci 2005; 30:197-206. [PMID: 16095914 DOI: 10.1016/j.mcn.2005.07.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2005] [Revised: 06/30/2005] [Accepted: 07/14/2005] [Indexed: 11/16/2022] Open
Abstract
GABA(A) receptors mediate most of the fast inhibitory neurotransmission in the brain, and are believed to be composed mainly of alpha, beta, and gamma subunits. It has been shown that GABA(A) receptors interact with a number of binding partners that act to regulate both receptor function and cell surface stability. Here, we reveal that GABA(A) receptors interact directly with N-ethylmaleimide-sensitive factor (NSF), a critical regulator of vesicular dependent protein trafficking, as measured by in vitro protein binding and co-immunoprecipitation assays. In addition, we established that NSF interacts with residues 395-415 of the receptor beta subunits and co-localizes with GABA(A) receptors in hippocampal neurons. We also established that NSF can regulate GABA(A) receptor cell surface expression depending upon residues 395-415 in the beta3 subunit. Together, our results suggest an important role for NSF activity in regulating the cell surface stability of GABA(A) receptors.
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Affiliation(s)
- Hidefumi Goto
- Laboratory of Molecular and Cellular Biochemistry, Faculty of Dental Science and Station for Collaborative Research, Kyushu University, Fukuoka 812-8582, Japan
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Yoshimura SI, Yamamoto A, Misumi Y, Sohda M, Barr FA, Fujii G, Shakoori A, Ohno H, Mihara K, Nakamura N. Dynamics of Golgi matrix proteins after the blockage of ER to Golgi transport. J Biochem 2004; 135:201-16. [PMID: 15047722 DOI: 10.1093/jb/mvh024] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
When the ER to Golgi transport is blocked by a GTP-restricted mutant of Sar1p (H79G) in NRK-52E cells, most Golgi resident proteins are transported back into the ER. In contrast, the cis-Golgi matrix proteins GM130 and GRASP65 are retained in punctate cytoplasmic structures, namely Golgi remnants. Significant amounts of the medial-Golgi matrix proteins golgin-45, GRASP55 and giantin are retained in the Golgi remnants, but a fraction of these proteins relocates to the ER. Golgin-97, a candidate trans-Golgi network matrix protein, is retained in Golgi remnant-like structures, but mostly separated from GM130 and GRASP65. Interestingly, most Sec13p, a COPII component, congregates into larger cytoplasmic clusters soon after the microinjection of Sar1p(H79G), and these move to accumulate around the Golgi apparatus. Sec13p clusters remain associated with Golgi remnants after prolonged incubation. Electron microscopic analysis revealed that Golgi remnants are clusters of larger vesicles with smaller vesicles, many of which are coated. GM130 is mainly associated with larger vesicles and Sec13p with smaller coated vesicles. The Sec13p clusters disperse when p115 binding to the Golgi apparatus is inhibited. These results suggest that cis-Golgi matrix proteins resist retrograde transport flow and stay as true residents in Golgi remnants after the inhibition of ER to Golgi transport.
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Affiliation(s)
- Shin-ichiro Yoshimura
- Molecular Biology Laboratory, Faculty of Pharmaceutical Sciences, and Cancer Research Institute, Kanazawa University, Kanazawa 920-0934
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Yamato T, Misumi Y, Yamasaki S, Kino M, Aomine M. Diabetes mellitus decreases hippocampal release of neurotransmitters: an in vivo microdialysis study of awake, freely moving rats. Diabetes Nutr Metab 2004; 17:128-36. [PMID: 15334789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Possible diabetes mellitus-induced changes in hippocampal monoaminergic activities were studied to understand the relationships between neurotransmitter levels and various abnormalities in freely moving diabetic rats. We used both experimentally (STZ rats) and spontaneously diabetic rats (WBN/Kob rats) as the diabetic animal model, and compared the findings with those obtained from non-diabetic rats (C rats). Measurement of neurotransmitters (serotonin and dopamine) was carried out using an in vivo microdialysis method. We found that: 1) the basal level of serotonin in the hippocampus was lowest in WBN rats, followed by STZ rats, then by C rats. The level of serotonin in WBN rats was about a half of that in C rats; 2) the basal level of dopamine was also significantly lower in the diabetic WBN and STZ rats than in C rats. The data show that diabetes mellitus decreases in the monoamine release from the hippocampus in both experimentally and spontaneously diabetic rats.
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Affiliation(s)
- T Yamato
- Laboratory of Food Processing, Department of Nutrition Sciences, Faculty of Nutrition Sciences, Nakamura Gakuen University, Fukuoka, Japan
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46
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Fujita A, Lord M, Hiroko T, Hiroko F, Chen T, Oka C, Misumi Y, Chant J. Rax1, a protein required for the establishment of the bipolar budding pattern in yeast. Gene 2004; 327:161-9. [PMID: 14980713 DOI: 10.1016/j.gene.2003.11.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2003] [Revised: 10/01/2003] [Accepted: 11/24/2003] [Indexed: 11/22/2022]
Abstract
In Saccharomyces cerevisiae, cell type determines two distinct spatial budding patterns. Haploid cells exhibit an axial pattern, whereas diploid cells exhibit a bipolar pattern. Axl1, a member of the insulin-degrading enzyme (IDE) family, is the key morphological determinant for the haploid axial pattern. Here we identified a novel gene, RAX1, specifically required for the bipolar budding pattern. Loss of RAX1 alters the bipolar pattern of axl1 haploids resulting in reversion to the axial pattern, and also alters the bipolar patterns of bud3 and bud4 haploids. However, bud10 rax1 haploids exhibit a random budding pattern, suggesting Bud10 acts as the key proximal landmark in axial budding. Rax1 is required for the localization of Bud8, the distal bipolar budding landmark. Interestingly, Rax1 contains a C-terminal domain possessing some similarity to insulin-related peptides. Our results suggest that Rax1 is necessary for the establishment of the bipolar budding landmark.
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Affiliation(s)
- Atsushi Fujita
- National Institute of Advanced Industrial Science and Technology, Tsukuba Central 6-4, 1-1 Higashi, Tsukuba 305-8566, Japan.
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Ohta E, Misumi Y, Sohda M, Fujiwara T, Yano A, Ikehara Y. Identification and characterization of GCP16, a novel acylated Golgi protein that interacts with GCP170. J Biol Chem 2003; 278:51957-67. [PMID: 14522980 DOI: 10.1074/jbc.m310014200] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
GCP170, a member of the golgin family associated with the cytoplasmic face of the Golgi membrane, was found to have a Golgi localization signal at the NH2-terminal region (positions 137-237). Using this domain as bait in the yeast two-hybrid screening system, we identified a novel protein that interacted with GCP170. The 2.0-kilobase mRNA encoding a 137-amino acid protein of 16 kDa designated GCP16 was ubiquitously expressed. Immunofluorescence microscopy showed that GCP16 was co-localized with GCP170 and giantin in the Golgi region. Despite the absence of a hydrophobic domain sufficient for participating in membrane localization, GCP16 was found to be tightly associated with membranes like an integral membrane protein. Labeling experiments with [3H]palmitic acid and mutational analysis demonstrated that GCP16 was acylated at Cys69 and Cys72, accounting for its tight association with the membrane. A mutant without potential acylation sites (C69A/C72A) was no longer localized to the Golgi, indicating that the acylation is prerequisite for the Golgi localization of GCP16. Although the mutant GCP16, even when overexpressed, had no effect on protein transport, overexpression of the wild type GCP16 caused an inhibitory effect on protein transport from the Golgi to the cell surface. Taken together, these results indicate that GCP16 is the acylated membrane protein, associated with GCP170, and possibly involved in vesicular transport from the Golgi to the cell surface.
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Affiliation(s)
- Eiji Ohta
- Department of Cell Biology, Fukuoka University School of Medicine, Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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Misumi Y, Ikehara Y. [Biogenesis and regulation of the Golgi complex]. Seikagaku 2003; 75:479-85. [PMID: 12872730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
- Yoshio Misumi
- Department of Cell Biology, Fukuoka University, School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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Fujiwara T, Misumi Y, Ikehara Y. Direct interaction of the Golgi membrane with the endoplasmic reticulum membrane caused by nordihydroguaiaretic acid. Biochem Biophys Res Commun 2003; 301:927-33. [PMID: 12589801 DOI: 10.1016/s0006-291x(03)00069-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Nordihydroguaiaretic acid (NDGA), an inhibitor of lipoxygenase, blocks protein transport from the endoplasmic reticulum (ER) to the Golgi complex and induces the redistribution of Golgi proteins into the ER. We investigated characteristics of NDGA-induced retrograde movement of the Golgi proteins to the ER. At an early stage of incubation of cells with NDGA, the Golgi complex formed convoluted membrane aggregates. Electron microscopy revealed that these aggregates directly interact en bloc with the ER membrane. The direct interaction and subsequent incorporation of the Golgi proteins into the ER were found to be temperature-dependent. The protein of ER-Golgi intermediate compartment (ERGIC), ERGIC53, was rapidly accumulated in the Golgi upon treatment with NDGA. This accumulation was significantly inhibited by low temperature at 15 degrees C. Under the condition, the redistribution of the Golgi proteins into the ER as well as the direct interaction between the ER and the Golgi by NDGA were also inhibited, suggesting an important role of the ERGIC in the retrograde movement. In contrast, the low temperature did not inhibit formation of the Golgi aggregates by NDGA. Taken together, these results suggest that NDGA causes the redistribution of the Golgi proteins into the ER through the direct connections between the Golgi, the ERGIC, and the ER.
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Affiliation(s)
- Toshiyuki Fujiwara
- Department of Cell Biology, Fukuoka University School of Medicine, Nanakuma, Jonan-ku, 814-0180, Fukuoka, Japan
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Nadal MS, Ozaita A, Amarillo Y, Vega-Saenz de Miera E, Ma Y, Mo W, Goldberg EM, Misumi Y, Ikehara Y, Neubert TA, Rudy B. The CD26-related dipeptidyl aminopeptidase-like protein DPPX is a critical component of neuronal A-type K+ channels. Neuron 2003; 37:449-61. [PMID: 12575952 DOI: 10.1016/s0896-6273(02)01185-6] [Citation(s) in RCA: 264] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Subthreshold-activating somatodendritic A-type potassium channels have fundamental roles in neuronal signaling and plasticity which depend on their unique cellular localization, voltage dependence, and kinetic properties. Some of the components of A-type K(+) channels have been identified; however, these do not reproduce the properties of the native channels, indicating that key molecular factors have yet to be unveiled. We purified A-type K(+) channel complexes from rat brain membranes and found that DPPX, a protein of unknown function that is structurally related to the dipeptidyl aminopeptidase and cell adhesion protein CD26, is a novel component of A-type K(+) channels. DPPX associates with the channels' pore-forming subunits, facilitates their trafficking and membrane targeting, reconstitutes the properties of the native channels in heterologous expression systems, and is coexpressed with the pore-forming subunits in the somatodendritic compartment of CNS neurons.
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Affiliation(s)
- Marcela S Nadal
- Department of Physiology and Neuroscience and Department of Biochemistry, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA
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