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Fukuta K, Kato DI, Maeda J, Tsuruta A, Suzuki H, Nagano Y, Tsukamoto H, Niwa K, Terauchi M, Toyoda A, Fujiyama A, Noguchi H. Genome assembly of Genji firefly (Nipponoluciola cruciata) reveals novel luciferase-like luminescent proteins without peroxisome targeting signal. DNA Res 2024; 31:dsae006. [PMID: 38494174 PMCID: PMC11090084 DOI: 10.1093/dnares/dsae006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 01/12/2024] [Accepted: 03/01/2024] [Indexed: 03/19/2024] Open
Abstract
The Genji firefly, Nipponoluciola cruciata, is an aquatic firefly endemic to Japan, inhabiting a wide area of the Japanese archipelago. The luminescence of fireflies is a scientifically interesting phenomenon, and many studies have evaluated this species in Japan. In this study, we sequenced the whole genome of male N. cruciata and constructed a high-quality genome assembly of 662 Mb with a BUSCO completeness of 99.1% in the genome mode. Using the detected set of 15,169 protein-coding genes, the genomic structures and genetic background of luminescence-related genes were also investigated. We found four new firefly luciferase-like genes in the genome. The highest bioluminescent activity was observed for LLa2, which originated from ancestral PDGY, a mitochondrial acyl-CoA synthetase. A thioesterase candidate, NcruACOT1, which is involved in d-luciferin biosynthesis, was expressed in the lantern. Two opsins were also detected and the absorption wavelength of the UV-type opsin candidate shifted from UV to blue. These findings provide an important resource for unravelling the adaptive evolution of fireflies in terms of luminescence and vision.
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Affiliation(s)
- Kentaro Fukuta
- Center for Genome Informatics, Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka 411-8540, Japan
- Data Analysis Division, Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Dai-ichiro Kato
- Department of Science, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Juri Maeda
- Department of Science, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Atsuhiro Tsuruta
- Department of Science, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | | | - Yukio Nagano
- Analytical Research Center for Experimental Sciences, Saga University, Saga 840-8502, Japan
| | - Hisao Tsukamoto
- Department of Biology, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Kazuki Niwa
- Advanced Quantum Measurement Group, Research Institute for Physical Measurement, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8563, Japan
| | - Makoto Terauchi
- Center for Genome Informatics, Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka 411-8540, Japan
- Data Analysis Division, Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Atsushi Toyoda
- Comparative Genomics Laboratory, Department of Genomics and Evolutionary Biology, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
- Sequencing Division, Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Asao Fujiyama
- Data Analysis Division, Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
- Comparative Genomics Laboratory, Department of Genomics and Evolutionary Biology, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Hideki Noguchi
- Center for Genome Informatics, Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka 411-8540, Japan
- Data Analysis Division, Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
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Tsukamoto H, Kubo Y. A self-inactivating invertebrate opsin optically drives biased signaling toward Gβγ-dependent ion channel modulation. Proc Natl Acad Sci U S A 2023; 120:e2301269120. [PMID: 37186850 PMCID: PMC10214182 DOI: 10.1073/pnas.2301269120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
Animal opsins, light-sensitive G protein-coupled receptors, have been used for optogenetic tools to control G protein-dependent signaling pathways. Upon G protein activation, the Gα and Gβγ subunits drive different intracellular signaling pathways, leading to complex cellular responses. For some purposes, Gα- and Gβγ-dependent signaling needs to be separately modulated, but these responses are simultaneously evoked due to the 1:1 stoichiometry of Gα and Gβγ Nevertheless, we show temporal activation of G protein using a self-inactivating invertebrate opsin, Platynereis c-opsin1, drives biased signaling for Gβγ-dependent GIRK channel activation in a light-dependent manner by utilizing the kinetic difference between Gβγ-dependent and Gα-dependent responses. The opsin-induced transient Gi/o activation preferentially causes activation of the kinetically fast Gβγ-dependent GIRK channels rather than slower Gi/oα-dependent adenylyl cyclase inhibition. Although similar Gβγ-biased signaling properties were observed in a self-inactivating vertebrate visual pigment, Platynereis c-opsin1 requires fewer retinal molecules to evoke cellular responses. Furthermore, the Gβγ-biased signaling properties of Platynereis c-opsin1 are enhanced by genetically fusing with RGS8 protein, which accelerates G protein inactivation. The self-inactivating invertebrate opsin and its RGS8-fusion protein can function as optical control tools biased for Gβγ-dependent ion channel modulation.
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Affiliation(s)
- Hisao Tsukamoto
- Department of Biology, Kobe University, Kobe657-8501, Japan
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki444-8585, Japan
- Japan Science and Technology Agency, Precursory Research for Embryonic Science and Technology, Kawaguchi 332-0012, Japan
| | - Yoshihiro Kubo
- Division of Biophysics and Neurobiology, Department of Molecular Physiology, National Institute for Physiological Sciences, Okazaki444-8585, Japan
- Department of Physiological Sciences, The Graduate University for Advanced Studies, Hayama240-0193, Japan
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Tsukamoto H, Shichida Y. Session 2SFA-the symposium "Elucidation of biological functions by optical control" on BSJ2019 at Miyazaki, Japan. Biophys Rev 2020; 12:279-280. [PMID: 32052369 DOI: 10.1007/s12551-020-00640-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 02/06/2020] [Indexed: 12/24/2022] Open
Abstract
The symposium "Elucidation of biological functions by optical control" was held during the 57th annual meeting of the Biophysical Society of Japan (BSJ2019) at Miyazaki, Japan. In this commentary, we introduce invited speakers of this symposium and summarized their research topics.
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Affiliation(s)
- Hisao Tsukamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, Japan. .,Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Kawaguchi, Japan.
| | - Yoshinori Shichida
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Kawaguchi, Japan.,Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Japan
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Kuriyama H, Fukushima S, Kimura T, Kubo Y, Nakahara S, Miyashita A, Tsukamoto H, Inozume T, Uemura Y, Senju S, Nishimura Y, Ihn H. 467 Immunotherapy with 4-1BBL-expressing iPScell-derived myeloid lines. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.517] [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: 11/15/2022]
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Yamaguchi M, Suzuki R, Oguchi M, Miyazaki K, Taguchi S, Amaki J, Maeda T, Kubota N, Maruyama D, Terui Y, Sekiguchi N, Takizawa J, Tsukamoto H, Murayama T, Ando T, Matsuoka H, Hasegawa M, Wada H, Sakai R, Kameoka Y, Tsukamoto N, Choi I, Masaki Y, Shimada K, Fukuhara N, Utsumi T, Uoshima N, Kagami Y, Asano N, Katayama N. CLINICAL OUTCOMES AND DIAGNOSIS-TO-TREATMENT INTERVAL IN PATIENTS WITH NK/T-CELL LYMPHOMA: 7-YEAR FOLLOW-UP OF THE NKEA STUDY. Hematol Oncol 2019. [DOI: 10.1002/hon.86_2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Yamaguchi
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - R. Suzuki
- Oncology and Hematology; Shimane University Hospital; Izumo Japan
| | - M. Oguchi
- Radiation Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - K. Miyazaki
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - S. Taguchi
- Radiation Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - J. Amaki
- Hematology and Oncology; Tokai University School of Medicine; Kanagawa Japan
| | - T. Maeda
- Hematology; Kurashiki Central Hospital; Kurashiki Japan
| | - N. Kubota
- Hematology; Saitama Cancer Center; Ina Japan
| | - D. Maruyama
- Hematology; National Cancer Center Hospital; Tokyo Japan
| | - Y. Terui
- Hematology Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - N. Sekiguchi
- Comprehensive Cancer Therapy; Shinshu University School of Medicine; Matsumoto Japan
| | - J. Takizawa
- Hematology; Endocrinology and Metabolism, Niigata University Faculty of Medicine; Niigata Japan
| | - H. Tsukamoto
- Hematology; Showa University School of Medicine; Tokyo Japan
| | - T. Murayama
- Hematology; Hyogo Cancer Center; Akashi Japan
| | - T. Ando
- Hematology; Respiratory Medicine and Oncology, Saga University; Saga Japan
| | - H. Matsuoka
- Medical Oncology/Hematology; Kobe University; Kobe Japan
| | - M. Hasegawa
- Radiation Oncology; Nara Medical University; Kashihara Japan
| | - H. Wada
- Hematology; Kawasaki Medical School; Kurashiki Japan
| | - R. Sakai
- Medical Oncology; Kanagawa Cancer Center; Yokohama Japan
| | - Y. Kameoka
- Hematology; Nephrology and Rheumatology, Akita University; Akita Japan
| | - N. Tsukamoto
- Oncology Center; Gunma University Hospital; Maebashi Japan
| | - I. Choi
- Hematology; National Hospital Organization Kyushu Cancer Center; Fukuoka Japan
| | - Y. Masaki
- Hematology and Immunology; Kanazawa Medical University; Kanazawa Japan
| | - K. Shimada
- Hematology and Oncology; Nagoya University School of Medicine; Nagoya Japan
| | - N. Fukuhara
- Hematology & Rheumatology; Tohoku University School of Medicine; Sendai Japan
| | - T. Utsumi
- Hematology; Shiga Medical Center for Adults; Moriyama Japan
| | - N. Uoshima
- Hematology; Japanese Red Cross Kyoto Daini Hospital; Kyoto Japan
| | - Y. Kagami
- Hematology; Toyota Kosei Hospital; Toyota Japan
| | - N. Asano
- Molecular Diagnostics; Shinshu Medical Center; Suzaka Japan
| | - N. Katayama
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
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Nagata T, Koyanagi M, Tsukamoto H, Mutt E, Schertler GFX, Deupi X, Terakita A. The counterion-retinylidene Schiff base interaction of an invertebrate rhodopsin rearranges upon light activation. Commun Biol 2019; 2:180. [PMID: 31098413 PMCID: PMC6513861 DOI: 10.1038/s42003-019-0409-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 03/27/2019] [Indexed: 01/07/2023] Open
Abstract
Animals sense light using photosensitive proteins-rhodopsins-containing a chromophore-retinal-that intrinsically absorbs in the ultraviolet. Visible light-sensitivity depends primarily on protonation of the retinylidene Schiff base (SB), which requires a negatively-charged amino acid residue-counterion-for stabilization. Little is known about how the most common counterion among varied rhodopsins, Glu181, functions. Here, we demonstrate that in a spider visual rhodopsin, orthologue of mammal melanopsins relevant to circadian rhythms, the Glu181 counterion functions likely by forming a hydrogen-bonding network, where Ser186 is a key mediator of the Glu181-SB interaction. We also suggest that upon light activation, the Glu181-SB interaction rearranges while Ser186 changes its contribution. This is in contrast to how the counterion of vertebrate visual rhodopsins, Glu113, functions, which forms a salt bridge with the SB. Our results shed light on the molecular mechanisms of visible light-sensitivity relevant to invertebrate vision and vertebrate non-visual photoreception.
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Affiliation(s)
- Takashi Nagata
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, 558-8585 Japan
| | - Mitsumasa Koyanagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, 558-8585 Japan
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Osaka, 558-8585 Japan
| | - Hisao Tsukamoto
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, 558-8585 Japan
| | - Eshita Mutt
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Gebhard F. X. Schertler
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
- Department of Biology, ETH Zürich, 8093 Zurich, Switzerland
| | - Xavier Deupi
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
- Condensed Matter Theory Group, Laboratory for Scientific Computing and Modelling, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Akihisa Terakita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, 558-8585 Japan
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Osaka, 558-8585 Japan
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Ayers T, Tsukamoto H, Gühmann M, Veedin Rajan VB, Tessmar-Raible K. A G o-type opsin mediates the shadow reflex in the annelid Platynereis dumerilii. BMC Biol 2018; 16:41. [PMID: 29669554 PMCID: PMC5904973 DOI: 10.1186/s12915-018-0505-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/12/2018] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND The presence of photoreceptive molecules outside the eye is widespread among animals, yet their functions in the periphery are less well understood. Marine organisms, such as annelid worms, exhibit a 'shadow reflex', a defensive withdrawal behaviour triggered by a decrease in illumination. Herein, we examine the cellular and molecular underpinnings of this response, identifying a role for a photoreceptor molecule of the Go-opsin class in the shadow response of the marine bristle worm Platynereis dumerilii. RESULTS We found Pdu-Go-opsin1 expression in single specialised cells located in adult Platynereis head and trunk appendages, known as cirri. Using gene knock-out technology and ablation approaches, we show that the presence of Go-opsin1 and the cirri is necessary for the shadow reflex. Consistently, quantification of the shadow reflex reveals a chromatic dependence upon light of approximately 500 nm in wavelength, matching the photoexcitation characteristics of the Platynereis Go-opsin1. However, the loss of Go-opsin1 does not abolish the shadow reflex completely, suggesting the existence of a compensatory mechanism, possibly acting through a ciliary-type opsin, Pdu-c-opsin2, with a Lambdamax of approximately 490 nm. CONCLUSIONS We show that a Go-opsin is necessary for the shadow reflex in a marine annelid, describing a functional example for a peripherally expressed photoreceptor, and suggesting that, in different species, distinct opsins contribute to varying degrees to the shadow reflex.
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Affiliation(s)
- Thomas Ayers
- Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter, Dr. Bohr-Gasse 9/4, 1030, Vienna, Austria
| | - Hisao Tsukamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, 444-8585, Japan
- Department of Structural Molecular Science, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa, 240-0193, Japan
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Kawaguchi, Saitama, 332-0012, Japan
| | - Martin Gühmann
- Max Planck Institute for Developmental Biology, Paul-Ehrlich Straße 20, 72076, Tübingen, Germany
| | - Vinoth Babu Veedin Rajan
- Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter, Dr. Bohr-Gasse 9/4, 1030, Vienna, Austria
- Research Platform 'Rhythms of Life', University of Vienna, 1030, Vienna, Austria
| | - Kristin Tessmar-Raible
- Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter, Dr. Bohr-Gasse 9/4, 1030, Vienna, Austria.
- Research Platform 'Rhythms of Life', University of Vienna, 1030, Vienna, Austria.
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Tsukamoto H, Higashi M, Motoki H, Watanabe H, Ganser C, Nakajo K, Kubo Y, Uchihashi T, Furutani Y. Structural properties determining low K + affinity of the selectivity filter in the TWIK1 K + channel. J Biol Chem 2018; 293:6969-6984. [PMID: 29545310 DOI: 10.1074/jbc.ra118.001817] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 01/10/2018] [Revised: 03/14/2018] [Indexed: 11/06/2022] Open
Abstract
Canonical K+ channels are tetrameric and highly K+-selective, whereas two-pore-domain K+ (K2P) channels form dimers, but with a similar pore architecture. A two-pore-domain potassium channel TWIK1 (KCNK1 or K2P1) allows permeation of Na+ and other monovalent ions, resulting mainly from the presence of Thr-118 in the P1 domain. However, the mechanistic basis for this reduced selectivity is unclear. Using ion-exchange-induced difference IR spectroscopy, we analyzed WT TWIK1 and T118I (highly K+-selective) and L228F (substitution in the P2 domain) TWIK1 variants and found that in the presence of K+ ions, WT and both variants exhibit an amide-I band at 1680 cm-1 This band corresponds to interactions of the backbone carbonyls in the selectivity filter with K+, a feature very similar to that of the canonical K+ channel KcsA. Computational analysis indicated that the relatively high frequency for the amide-I band is well explained by impairment of hydrogen bond formation with water molecules. Moreover, concentration-dependent spectral changes indicated that the K+ affinity of the WT selectivity filter was much lower than those of the variants. Furthermore, only the variants displayed a higher frequency shift of the 1680-cm-1 band upon changes from K+ to Rb+ or Cs+ conditions. High-speed atomic force microscopy disclosed that TWIK1's surface morphology largely does not change in K+ and Na+ solutions. Our results reveal the local conformational changes of the TWIK1 selectivity filter and suggest that the amide-I bands may be useful "molecular fingerprints" for assessing the properties of other K+ channels.
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Affiliation(s)
- Hisao Tsukamoto
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, and.,Departments of Structural Molecular Science and
| | - Masahiro Higashi
- the Department of Chemistry, Biology and Marine Science, University of the Ryukyus, 1 Senbaru, Nishihara, Nakagami, Okinawa 903-0213
| | - Hideyoshi Motoki
- the Department of Chemistry, Biology and Marine Science, University of the Ryukyus, 1 Senbaru, Nishihara, Nakagami, Okinawa 903-0213
| | - Hiroki Watanabe
- the Department of Physics and Structural Biology Research Center, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, and
| | - Christian Ganser
- the Department of Physics and Structural Biology Research Center, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, and
| | - Koichi Nakajo
- the Division of Biophysics and Neurobiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan.,Physiological Sciences, SOKENDAI (Graduate University for Advanced Studies), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585
| | - Yoshihiro Kubo
- the Division of Biophysics and Neurobiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan.,Physiological Sciences, SOKENDAI (Graduate University for Advanced Studies), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585
| | - Takayuki Uchihashi
- the Department of Physics and Structural Biology Research Center, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, and
| | - Yuji Furutani
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, and .,Departments of Structural Molecular Science and
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Tsukamoto H. Ultrasound studies of nerves. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.117] [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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Hokkoku K, Tsukamoto H, Hatanaka Y, Sonoo M. Quantitative muscle ultrasound is useful for evaluating secondary axonal degeneration in chronic inflammatory demyelinating polyneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3513] [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: 11/29/2022]
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Watanabe D, Tsukamoto H, Abe T, Tanaka F, Komori T. Ultrasonographic evaluation of cervical nerve roots and peripheral nerves in patients with spinal and bulbar muscular atrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2697] [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: 11/16/2022]
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Tsukamoto H, Chen IS, Kubo Y, Furutani Y. A ciliary opsin in the brain of a marine annelid zooplankton is ultraviolet-sensitive, and the sensitivity is tuned by a single amino acid residue. J Biol Chem 2017. [PMID: 28623234 DOI: 10.1074/jbc.m117.793539] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ciliary opsins were classically thought to function only in vertebrates for vision, but they have also been identified recently in invertebrates for non-visual photoreception. Larvae of the annelid Platynereis dumerilii are used as a zooplankton model, and this zooplankton species possesses a "vertebrate-type" ciliary opsin (named c-opsin) in the brain. Platynereis c-opsin is suggested to relay light signals for melatonin production and circadian behaviors. Thus, the spectral and biochemical characteristics of this c-opsin would be directly related to non-visual photoreception in this zooplankton model. Here we demonstrate that the c-opsin can sense UV to activate intracellular signaling cascades and that it can directly bind exogenous all-trans-retinal. These results suggest that this c-opsin regulates circadian signaling in a UV-dependent manner and that it does not require a supply of 11-cis-retinal for photoreception. Avoidance of damaging UV irradiation is a major cause of large-scale daily zooplankton movement, and the observed capability of the c-opsin to transmit UV signals and bind all-trans-retinal is ideally suited for sensing UV radiation in the brain, which presumably lacks enzymes producing 11-cis-retinal. Mutagenesis analyses indicated that a unique amino acid residue (Lys-94) is responsible for c-opsin-mediated UV sensing in the Platynereis brain. We therefore propose that acquisition of the lysine residue in the c-opsin would be a critical event in the evolution of Platynereis to enable detection of ambient UV light. In summary, our findings indicate that the c-opsin possesses spectral and biochemical properties suitable for UV sensing by the zooplankton model.
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Affiliation(s)
- Hisao Tsukamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan; Department of Structural Molecular Science, Graduate University for Advanced Studies, Hayama, Kanagawa 240-0193, Japan.
| | - I-Shan Chen
- Division of Biophysics and Neurobiology, Department of Molecular Physiology, National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan; Physiological Sciences, SOKENDAI, Graduate University for Advanced Studies, Hayama, Kanagawa 240-0193, Japan
| | - Yoshihiro Kubo
- Division of Biophysics and Neurobiology, Department of Molecular Physiology, National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan; Physiological Sciences, SOKENDAI, Graduate University for Advanced Studies, Hayama, Kanagawa 240-0193, Japan
| | - Yuji Furutani
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan; Department of Structural Molecular Science, Graduate University for Advanced Studies, Hayama, Kanagawa 240-0193, Japan
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Kasuya G, Fujiwara Y, Tsukamoto H, Morinaga S, Ryu S, Touhara K, Ishitani R, Furutani Y, Hattori M, Nureki O. Structural insights into the nucleotide base specificity of P2X receptors. Sci Rep 2017; 7:45208. [PMID: 28332633 PMCID: PMC5362899 DOI: 10.1038/srep45208] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 02/20/2017] [Indexed: 11/19/2022] Open
Abstract
P2X receptors are trimeric ATP-gated cation channels involved in diverse physiological processes, ranging from muscle contraction to nociception. Despite the recent structure determination of the ATP-bound P2X receptors, the molecular mechanism of the nucleotide base specificity has remained elusive. Here, we present the crystal structure of zebrafish P2X4 in complex with a weak affinity agonist, CTP, together with structure-based electrophysiological and spectroscopic analyses. The CTP-bound structure revealed a hydrogen bond, between the cytosine base and the side chain of the basic residue in the agonist binding site, which mediates the weak but significant affinity for CTP. The cytosine base is further recognized by two main chain atoms, as in the ATP-bound structure, but their bond lengths seem to be extended in the CTP-bound structure, also possibly contributing to the weaker affinity for CTP over ATP. This work provides the structural insights for the nucleotide base specificity of P2X receptors.
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Affiliation(s)
- Go Kasuya
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
| | - Yuichiro Fujiwara
- Integrative Physiology, Department of Physiology, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Hisao Tsukamoto
- Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki, 444-8585, Japan
| | - Satoshi Morinaga
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,ERATO Touhara Chemosensory Signal Project, JST, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Satoshi Ryu
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,ERATO Touhara Chemosensory Signal Project, JST, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Kazushige Touhara
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,ERATO Touhara Chemosensory Signal Project, JST, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ryuichiro Ishitani
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
| | - Yuji Furutani
- Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki, 444-8585, Japan
| | - Motoyuki Hattori
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, Department of Physiology and Biophysics, School of Life Sciences, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, 200438, China
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
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14
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Hasegawa K, Tagawa M, Takagi K, Tsukamoto H, Tomioka Y, Suzuki T, Nishioka Y, Ohrui T, Numasaki M. Anti-tumor immunity elicited by direct intratumoral administration of a recombinant adenovirus expressing either IL-28A/IFN-λ2 or IL-29/IFN-λ1. Cancer Gene Ther 2016; 23:266-77. [PMID: 27561689 DOI: 10.1038/cgt.2016.29] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 12/25/2015] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 12/14/2022]
Abstract
Interleukin (IL)-28A/interferon (IFN)-λ2 and IL-29/IFN-λ1 have been demonstrated to elicit direct and indirect anti-tumor actions. In this study, we constructed an adenovirus vector expressing either IL-28A/IFN-λ2 (AdIL-28A) or IL-29/IFN-λ1 (AdIL-29) to evaluate the therapeutic properties of intratumoral injection of recombinant adenovirus to apply for the clinical implementation of cancer gene therapy. Despite the lack of an anti-proliferative effect on MCA205 and B16-F10 cells, a retarded growth of established subcutaneous tumors was observed following multiple injections of either AdIL-28A or AdIL-29 when compared with AdNull. In vivo cell depletion experiments displayed that both NK cells and CD8(+) T cells have a major role in AdIL-28A-mediated tumor growth suppression. A significant increase in the number of infiltrating CD8(+) T cells into the tumors treated with either AdIL-28A or AdIL-29 was observed. Moreover, specific anti-tumor cytotoxic T lymphocyte reactivity was detected in spleen cells from animals treated with either AdIL-28A or AdIL-29. In IFN-γ-deficient mice, anti-tumor activities of AdIL-28A were completely impaired, indicating that IFN-γ is critically involved in the tumor growth inhibition triggered by AdIL-28A. IL-12 provided a synergistic anti-tumor effect when combined with AdIL-28A. These results indicate that AdIL-28A and AdIL-29 could be successfully utilized as an alternative cancer immunogene therapy.
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Affiliation(s)
- K Hasegawa
- Laboratory of Clinical Science and Biomedicine, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - M Tagawa
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan
| | - K Takagi
- Departments of Pathology and Histotechnology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - H Tsukamoto
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Y Tomioka
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - T Suzuki
- Departments of Pathology and Histotechnology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Y Nishioka
- Department of Respiratory Medicine and Rheumatology, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan
| | - T Ohrui
- Division of Geriatric Pharmacotherapy, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - M Numasaki
- Laboratory of Clinical Science and Biomedicine, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Japan
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15
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Nagasawa K, Tada Y, Koarada S, Tsukamoto H, Horiuchi T, Yoshizawa S, Murai K, Ueda A, Haruta Y, Ohta A. Prevention of steroid-induced osteonecrosis of femoral head in systemic lupus erythematosus by anti-coagulant. Lupus 2016; 15:354-7. [PMID: 16830881 DOI: 10.1191/0961203306lu2311oa] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 11/05/2022]
Abstract
Although osteonecrosis of femoral head (ONF) is one of the serious complications in systemic lupus erythematosus (SLE) associated with corticosteroid therapy, there has been few trials of prevention of ONF described. We aimed to prevent ONF in steroid-treated SLE patients using anticoagulant, warfarin, conducting a multicenter prospective study. Sixty newly diagnosed SLE patients requiring 40 mg/day or more prednisolone were alternately assigned to either of two groups; a warfarin group and a control one. Warfarin (1 ∼ 5 mg/day) was started together with the beginning of steroid therapy and continued at least for three months. Patients were observed for the development of silent ONF by magnetic resonance imaging (MRI) and symptomatic ONF by plain radiography for over five years. The warfarin group consisted of 31 patients (62 hips) and the control one 29 patients (58 hips). Silent ONF developed in 13 hips (21%) and 19 hips (33%) in the warfarin group and the control group, respectively ( P = 0.13). On the other hand, warfarin tended to prevent symptomatic ONF; only three hips of 62 (4.8%) in the warfarin group and eight hips of 58 (14%) in the control group ( P = 0.08) developed silent ONF. It was also found that silent ONF developed, if it did, very early; within three months in 16 of 18 patients (89%). Among risk factors for silent ONF, steroid pulse therapy was most outstanding and it seemed to overcome the effect of warfarin. Taken together, for the time being, anticoagulant therapy, if not significantly sufficient, may be of use for the prevention of steroid-induced ONF in SLE. We consider that this study added to important evidence for the pathogenesis and prevention of ONF.
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Affiliation(s)
- K Nagasawa
- Department of Internal Medicine, Saga Medical School, Japan.
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16
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Nagasawa K, Tada Y, Koarada S, Horiuchi T, Tsukamoto H, Murai K, Ueda A, Yoshizawa S, Ohta A. Very early development of steroid-associated osteonecrosis of femoral head in systemic lupus erythematosus: prospective study by MRI. Lupus 2016; 14:385-90. [PMID: 15934439 DOI: 10.1191/0961203305lu2103oa] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [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: 11/05/2022]
Abstract
The objective of this study was to define prospectively the early development of corticosteroid-induced osteonecrosis of femoral head (ONF) in patients with systemic lupus erythematosus (SLE) and to identify the association of initial steroid treatment with the development of early (silent) ONF. Forty-five patients who were newly diagnosed as having SLE and required 40 mg/day or more prednisolone were enrolled. To detect silent ONF, examinations using magnetic resonance imaging (MRI) were done three months after starting steroid therapy, followed by every year’s MRI and plain radiography for over five years. Clinical and laboratory data were compared between silent ONF and non-ONF groups. Of 45 patients, 15 (33%) developed silent ONF and five (11%) symptomatic ONF. It was of interest that MRI detected silent ONF very early (by three months) in 14 patients (93%). It should be noted that pulse therapy with 1000 mg/day methylprednisolone was found to be done very frequently (13 of 15, 87%) in the silent ONF group compared to non-ONF group (11 of 30, 37%) (P, 0.01) although other clinical features were not significantly different between both groups. High dose corticosteroids caused elevation of serum levels of total cholesterol, albumin, and leukocyte count in most of patients. The degree of elevation of those parameters at one or three months was more prominent in the silent ONF group. In particular, the change ratio of total cholesterol at one month was outstanding in the silent ONF group compared to non-ONF group (0.551 versus 0.374, P, 0.05). In conclusion, pathological ONF develops very early in one-third of SLE patients who received high dose corticosteroids and steroid pulse therapy could be a significant risk factor. An abrupt elevation of serum total cholesterol and/or sensitivity to steroids seem to be associated with the pathogenesis of ONF.
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Affiliation(s)
- K Nagasawa
- Department of Internal Medicine, Saga Medical School, Saga, Japan.
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17
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Adachi N, Adamovitch V, Adjovi Y, Aida K, Akamatsu H, Akiyama S, Akli A, Ando A, Andrault T, Antonietti H, Anzai S, Arkoun G, Avenoso C, Ayrault D, Banasiewicz M, Banaśkiewicz M, Bernardini L, Bernard E, Berthet E, Blanchard M, Boreyko D, Boros K, Charron S, Cornette P, Czerkas K, Dameron M, Date I, De Pontbriand M, Demangeau F, Dobaczewski Ł, Dobrzyński L, Ducouret A, Dziedzic M, Ecalle A, Edon V, Endo K, Endo T, Endo Y, Etryk D, Fabiszewska M, Fang S, Fauchier D, Felici F, Fujiwara Y, Gardais C, Gaul W, Gurin L, Hakoda R, Hamamatsu I, Handa K, Haneda H, Hara T, Hashimoto M, Hashimoto T, Hashimoto K, Hata D, Hattori M, Hayano R, Hayashi R, Higasi H, Hiruta M, Honda A, Horikawa Y, Horiuchi H, Hozumi Y, Ide M, Ihara S, Ikoma T, Inohara Y, Itazu M, Ito A, Janvrin J, Jout I, Kanda H, Kanemori G, Kanno M, Kanomata N, Kato T, Kato S, Katsu J, Kawasaki Y, Kikuchi K, Kilian P, Kimura N, Kiya M, Klepuszewski M, Kluchnikov E, Kodama Y, Kokubun R, Konishi F, Konno A, Kontsevoy V, Koori A, Koutaka A, Kowol A, Koyama Y, Kozioł M, Kozue M, Kravtchenko O, Kruczała W, Kudła M, Kudo H, Kumagai R, Kurogome K, Kurosu A, Kuse M, Lacombe A, Lefaillet E, Magara M, Malinowska J, Malinowski M, Maroselli V, Masui Y, Matsukawa K, Matsuya K, Matusik B, Maulny M, Mazur P, Miyake C, Miyamoto Y, Miyata K, Miyata K, Miyazaki M, Molȩda M, Morioka T, Morita E, Muto K, Nadamoto H, Nadzikiewicz M, Nagashima K, Nakade M, Nakayama C, Nakazawa H, Nihei Y, Nikul R, Niwa S, Niwa O, Nogi M, Nomura K, Ogata D, Ohguchi H, Ohno J, Okabe M, Okada M, Okada Y, Omi N, Onodera H, Onodera K, Ooki S, Oonishi K, Oonuma H, Ooshima H, Oouchi H, Orsucci M, Paoli M, Penaud M, Perdrisot C, Petit M, Piskowski A, Płocharski A, Polis A, Polti L, Potsepnia T, Przybylski D, Pytel M, Quillet W, Remy A, Robert C, Sadowski M, Saito M, Sakuma D, Sano K, Sasaki Y, Sato N, Schneider T, Schneider C, Schwartzman K, Selivanov E, Sezaki M, Shiroishi K, Shustava I, Śniecińska A, Stalchenko E, Staroń A, Stromboni M, Studzińska W, Sugisaki H, Sukegawa T, Sumida M, Suzuki Y, Suzuki K, Suzuki R, Suzuki H, Suzuki K, Świderski W, Szudejko M, Szymaszek M, Tada J, Taguchi H, Takahashi K, Tanaka D, Tanaka G, Tanaka S, Tanino K, Tazbir K, Tcesnokova N, Tgawa N, Toda N, Tsuchiya H, Tsukamoto H, Tsushima T, Tsutsumi K, Umemura H, Uno M, Usui A, Utsumi H, Vaucelle M, Wada Y, Watanabe K, Watanabe S, Watase K, Witkowski M, Yamaki T, Yamamoto J, Yamamoto T, Yamashita M, Yanai M, Yasuda K, Yoshida Y, Yoshida A, Yoshimura K, Żmijewska M, Zuclarelli E. Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus-the 'D-shuttle' project. J Radiol Prot 2016; 36:49-66. [PMID: 26613195 DOI: 10.1088/0952-4746/36/1/49] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries.
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Affiliation(s)
- N Adachi
- Adachi High School, 2-347 Kakunai, Nihonmatsu, Fukushima 964-0904, Japan
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18
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Kawano-Yamashita E, Koyanagi M, Wada S, Tsukamoto H, Nagata T, Terakita A. Activation of Transducin by Bistable Pigment Parapinopsin in the Pineal Organ of Lower Vertebrates. PLoS One 2015; 10:e0141280. [PMID: 26492337 PMCID: PMC4619617 DOI: 10.1371/journal.pone.0141280] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/05/2015] [Indexed: 11/18/2022] Open
Abstract
Pineal organs of lower vertebrates contain several kinds of photosensitive molecules, opsins that are suggested to be involved in different light-regulated physiological functions. We previously reported that parapinopsin is an ultraviolet (UV)-sensitive opsin that underlies hyperpolarization of the pineal photoreceptor cells of lower vertebrates to achieve pineal wavelength discrimination. Although, parapinopsin is phylogenetically close to vertebrate visual opsins, it exhibits a property similar to invertebrate visual opsins and melanopsin: the photoproduct of parapinopsin is stable and reverts to the original dark states, demonstrating the nature of bistable pigments. Therefore, it is of evolutionary interest to identify a phototransduction cascade driven by parapinopsin and to compare it with that in vertebrate visual cells. Here, we showed that parapinopsin is coupled to vertebrate visual G protein transducin in the pufferfish, zebrafish, and lamprey pineal organs. Biochemical analyses demonstrated that parapinopsins activated transducin in vitro in a light-dependent manner, similar to vertebrate visual opsins. Interestingly, transducin activation by parapinopsin was provoked and terminated by UV- and subsequent orange-lights irradiations, respectively, due to the bistable nature of parapinopsin, which could contribute to a wavelength-dependent control of a second messenger level in the cell as a unique optogenetic tool. Immunohistochemical examination revealed that parapinopsin was colocalized with Gt2 in the teleost, which possesses rod and cone types of transducin, Gt1, and Gt2. On the other hand, in the lamprey, which does not possess the Gt2 gene, in situ hybridization suggested that parapinopsin-expressing photoreceptor cells contained Gt1 type transducin GtS, indicating that lamprey parapinopsin may use GtS in place of Gt2. Because it is widely accepted that vertebrate visual opsins having a bleaching nature have evolved from non-bleaching opsins similar to parapinopsin, these results implied that ancestral bistable opsins might acquire coupling to the transducin-mediated cascade and achieve light-dependent hyperpolarizing response of the photoreceptor cells.
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Affiliation(s)
- Emi Kawano-Yamashita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
| | - Mitsumasa Koyanagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan
| | - Seiji Wada
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
| | - Hisao Tsukamoto
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
| | - Takashi Nagata
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
| | - Akihisa Terakita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka, 558–8585, Japan
- * E-mail:
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Tsukamoto H, Kubo Y, Farrens DL, Koyanagi M, Terakita A, Furutani Y. Retinal Attachment Instability Is Diversified among Mammalian Melanopsins. J Biol Chem 2015; 290:27176-27187. [PMID: 26416885 DOI: 10.1074/jbc.m115.666305] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 05/18/2015] [Indexed: 01/12/2023] Open
Abstract
Melanopsins play a key role in non-visual photoreception in mammals. Their close phylogenetic relationship to the photopigments in invertebrate visual cells suggests they have evolved to acquire molecular characteristics that are more suited for their non-visual functions. Here we set out to identify such characteristics by comparing the molecular properties of mammalian melanopsin to those of invertebrate melanopsin and visual pigment. Our data show that the Schiff base linking the chromophore retinal to the protein is more susceptive to spontaneous cleavage in mammalian melanopsins. We also find this stability is highly diversified between mammalian species, being particularly unstable for human melanopsin. Through mutagenesis analyses, we find that this diversified stability is mainly due to parallel amino acid substitutions in extracellular regions. We propose that the different stability of the retinal attachment in melanopsins may contribute to functional tuning of non-visual photoreception in mammals.
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Affiliation(s)
- Hisao Tsukamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, 444-8585, Japan,; Department of Structural Molecular Science, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan,.
| | - Yoshihiro Kubo
- Division of Biophysics and Neurobiology, Department of Molecular Physiology, National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan,; Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
| | - David L Farrens
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, Oregon 97239-3098
| | - Mitsumasa Koyanagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Akihisa Terakita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yuji Furutani
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, 444-8585, Japan,; Department of Structural Molecular Science, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
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Abstract
Regardless of subsequent clinical courses of patients with dysplastic nevi (DN), substantial evidence supporting DN as one of the melanoma-prone diseases is not yet available, especially in sporadic DN, due to the lack of genetic information other than retrospective studies in clinical observation. This study aimed at the immunohistological characterization of sporadic DN distinct from common nevi (CN) and at the evaluation of the potentially of sporadic DN for malignant transformation. We considered our results together with previous immunological and epidemiological reports. We noted the following three immunohistological characteristics. 1) Proliferating cell nuclear antigen (PCNA), one of the markers for active cell division, could be detected on DN cells in junctional nests of only one among ten DN examined but not on CN cells at all. 2) The altered expression of alpha-smooth muscle actin (alpha-Sma), often observed in melanoma cells, could not be detected in DN cells. However, anti-alpha-Sma monoclonal antibody (MoAb) clearly demonstrated distinctive hypervascularity in the stroma surrounding DN when compared with CN. 3) ME491 antigen, which is known to be expressed mainly in the radial growth phase of melanoma, was detected with similar intensity on both DN and CN. These data indicate that DN has a somewhat higher potentiality than CN for cell division and secretion of some cytokines which can induce hypervascularity in the surrounding stroma, but that DN has not yet undergone the significant phenotypic changes observed in melanoma cells. Further advancements in understanding molecular events in DN cells will be of great benefit in setting DN in the multiple oncogenic spectrum from pigment cells to melanoma.
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Affiliation(s)
- H Tsukamoto
- Department of Dermatology, Kobe University School of Medicine, Japan
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Inaguma A, Tsukamoto H, Kato HE, Kimura T, Ishizuka T, Oishi S, Yawo H, Nureki O, Furutani Y. Chimeras of channelrhodopsin-1 and -2 from Chlamydomonas reinhardtii exhibit distinctive light-induced structural changes from channelrhodopsin-2. J Biol Chem 2015; 290:11623-34. [PMID: 25796616 DOI: 10.1074/jbc.m115.642256] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 02/13/2015] [Indexed: 01/18/2023] Open
Abstract
Channelrhodopsin-2 (ChR2) from the green alga Chlamydomonas reinhardtii functions as a light-gated cation channel that has been developed as an optogenetic tool to stimulate specific nerve cells in animals and control their behavior by illumination. The molecular mechanism of ChR2 has been extensively studied by a variety of spectroscopic methods, including light-induced difference Fourier transform infrared (FTIR) spectroscopy, which is sensitive to structural changes in the protein upon light activation. An atomic structure of channelrhodopsin was recently determined by x-ray crystallography using a chimera of channelrhodopsin-1 (ChR1) and ChR2. Electrophysiological studies have shown that ChR1/ChR2 chimeras are less desensitized upon continuous illumination than native ChR2, implying that there are some structural differences between ChR2 and chimeras. In this study, we applied light-induced difference FTIR spectroscopy to ChR2 and ChR1/ChR2 chimeras to determine the molecular basis underlying these functional differences. Upon continuous illumination, ChR1/ChR2 chimeras exhibited structural changes distinct from those in ChR2. In particular, the protonation state of a glutamate residue, Glu-129 (Glu-90 in ChR2 numbering), in the ChR chimeras is not changed as dramatically as in ChR2. Moreover, using mutants stabilizing particular photointermediates as well as time-resolved measurements, we identified some differences between the major photointermediates of ChR2 and ChR1/ChR2 chimeras. Taken together, our data indicate that the gating and desensitizing processes in ChR1/ChR2 chimeras are different from those in ChR2 and that these differences should be considered in the rational design of new optogenetic tools based on channelrhodopsins.
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Affiliation(s)
- Asumi Inaguma
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan, PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Department of Structural Molecular Science, Graduate University for Advanced Studies (SOKENDAI), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Hisao Tsukamoto
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan, Department of Structural Molecular Science, Graduate University for Advanced Studies (SOKENDAI), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Hideaki E Kato
- Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Tetsunari Kimura
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan, Department of Structural Molecular Science, Graduate University for Advanced Studies (SOKENDAI), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Toru Ishizuka
- CREST, Japan Science and Technology Agency (JST), 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, and Department of Developmental Biology and Neuroscience, Tohoku University Graduate School of Life Sciences, Sendai 980-8577, Japan
| | - Satomi Oishi
- Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Hiromu Yawo
- CREST, Japan Science and Technology Agency (JST), 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, and Department of Developmental Biology and Neuroscience, Tohoku University Graduate School of Life Sciences, Sendai 980-8577, Japan
| | - Osamu Nureki
- Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Yuji Furutani
- From the Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan, PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Department of Structural Molecular Science, Graduate University for Advanced Studies (SOKENDAI), 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan,
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Paolasso I, Hobson-Webb L, Briani C, Tsukamoto H, Coraci D, Erra C, Granata G, Padua L. 63. Multicenter protocol on the role of ultrasound in immune-mediated neuropathies. Clin Neurophysiol 2015. [DOI: 10.1016/j.clinph.2014.10.082] [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: 11/29/2022]
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Sun L, Kawano-Yamashita E, Nagata T, Tsukamoto H, Furutani Y, Koyanagi M, Terakita A. Distribution of mammalian-like melanopsin in cyclostome retinas exhibiting a different extent of visual functions. PLoS One 2014; 9:e108209. [PMID: 25251771 PMCID: PMC4177573 DOI: 10.1371/journal.pone.0108209] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 08/20/2014] [Indexed: 11/18/2022] Open
Abstract
Mammals contain 1 melanopsin (Opn4) gene that is expressed in a subset of retinal ganglion cells to serve as a photopigment involved in non-image-forming vision such as photoentrainment of circadian rhythms. In contrast, most nonmammalian vertebrates possess multiple melanopsins that are distributed in various types of retinal cells; however, their functions remain unclear. We previously found that the lamprey has only 1 type of mammalian-like melanopsin gene, which is similar to that observed in mammals. Here we investigated the molecular properties and localization of melanopsin in the lamprey and other cyclostome hagfish retinas, which contribute to visual functions including image-forming vision and mainly to non-image-forming vision, respectively. We isolated 1 type of mammalian-like melanopsin cDNA from the eyes of each species. We showed that the recombinant lamprey melanopsin was a blue light-sensitive pigment and that both the lamprey and hagfish melanopsins caused light-dependent increases in calcium ion concentration in cultured cells in a manner that was similar to that observed for mammalian melanopsins. We observed that melanopsin was distributed in several types of retinal cells, including horizontal cells and ganglion cells, in the lamprey retina, despite the existence of only 1 melanopsin gene in the lamprey. In contrast, melanopsin was almost specifically distributed to retinal ganglion cells in the hagfish retina. Furthermore, we found that the melanopsin-expressing horizontal cells connected to the rhodopsin-containing short photoreceptor cells in the lamprey. Taken together, our findings suggest that in cyclostomes, the global distribution of melanopsin in retinal cells might not be related to the melanopsin gene number but to the extent of retinal contribution to visual function.
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Affiliation(s)
- Lanfang Sun
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Emi Kawano-Yamashita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Takashi Nagata
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Hisao Tsukamoto
- Department of life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, Japan
- Department of Structural Molecular Science, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan
| | - Yuji Furutani
- Department of life and Coordination-Complex Molecular Science, Institute for Molecular Science, Okazaki, Japan
- Department of Structural Molecular Science, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan
| | - Mitsumasa Koyanagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
| | - Akihisa Terakita
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan
- * E-mail:
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Yabuuchi H, Matsuo Y, Tsukamoto H, Horiuchi T, Sunami S, Kamitani T, Jinnouchi M, Nagao M, Akashi K, Honda H. Evaluation of the extent of ground-glass opacity on high-resolution CT in patients with interstitial pneumonia associated with systemic sclerosis: Comparison between quantitative and qualitative analysis. Clin Radiol 2014; 69:758-64. [DOI: 10.1016/j.crad.2014.03.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 03/05/2014] [Accepted: 03/06/2014] [Indexed: 11/27/2022]
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25
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Tsukamoto H, Ayano M, Miyamoto T, Niiro H, Arinobu Y, Akahoshi M, Akashi K. OP0093 Comparison of CD34-Selected and Unmanipulated Autologous Hematopoietic Stem Cell Transplantation for Systemic Sclerosis: Four-Year Follow-Up Results. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3166] [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: 11/04/2022]
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26
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Ayano M, Tsukamoto H, Tanaka A, Nakano S, Ueki N, Ueda S, Hisamoto S, Ota SI, Akahoshi M, Arinobu Y, Niiro H, Horiuchi T, Akashi K. AB0201 Cell Surface Expression of DNAM-1 (CD226) on CD8+ T Cells is Increased in Patients with Systemic Sclerosis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3217] [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: 11/04/2022]
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27
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Edderkaoui M, Grippo PJ, Ouhaddi Y, Benhaddou H, Xu S, Pinkerton K, Tsukamoto H, Knudsen B, Gukovskaya AS, Pandol S. Mouse models of pancreatic cancer induced by chronic pancreatitis and smoking. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.3_suppl.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
229 Background: Chronic pancreatitis (CP) and smoking are two major risk factors for pancreatic cancer (PaCa). Here we developed mouse models of PaCa by exposing mice to CP and/or smoking. Methods: Wild type (WT) and Pdx1-Cre;LSL-Kras transgenic mice were subjected to 7-hourly cerulein injections (50µg/kg) twice a week for 3 weeks to induce CP. Another group of mice was exposed to tobacco smoke (80mg/m3) in chambers for 5days/week during 6 weeks. A third group was exposed to both treatments. Mice were then sacrificed and pancreatic tissue analyzed. Pancreatic lesions, proliferation, fibrosis, inflammation, EMT and stem cell markers were analyzed by immunohistochemistry and Western. Results: CP significantly increased the number and stage of pancreatic neoplastic (PanIN) lesions with fibrosis, stellate cell activation and inflammation in transgenic mice. These changes were significantly less in WT mice. EMT markers (decrease in E-Cadherin and increase in vimentin protein levels) were stimulated by CP in both WT and transgenic mice. Similarly, smoking stimulated PanIN lesion formation, fibrosis and inflammation in transgenic mice, but to a lesser extent than CP model. Expression of EMT and stem cell markers was greater in the smoking model compared to CP. Combination of CP and smoking induced greater stimulation of PanIN lesion formation, fibrosis and inflammation compared to either treatment alone in transgenic mice. Conclusions: The results indicate that both CP and tobacco smoke promote PaCa progression in transgenic mice. The combination of CP and smoking has greater effects than either treatment alone. EMT and stem cell markers developed in WT as well as in transgenic mice with smoking suggesting that smoking has effects independent of Kras on cell transformation.
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Affiliation(s)
- M. Edderkaoui
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
| | - Paul J. Grippo
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Y. Ouhaddi
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
| | - H. Benhaddou
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
| | - S. Xu
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
| | - K. Pinkerton
- University of California, Davis, Los Angeles, CA
| | - H. Tsukamoto
- University of Southern California, Los Angeles, CA
| | | | - A. S. Gukovskaya
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
| | - Stephen Pandol
- Cedars-Sinai Medical Center, Department of Veterans Affairs, and University of California, Los Angeles, Los Angeles, CA
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Paolasso I, Briani C, Tsukamoto H, Coraci D, Erra C, Franco PD, Granata G, Padua L. 150. Proposal for a multicenter protocol on the role of ultrasound in immune-mediated neuropathies. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.06.177] [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: 11/16/2022]
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29
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Gagliardo A, Coraci D, Romano M, Marquez EF, Tsukamoto H, de Franco P, Padua L. 149. Clinical, neurophysiological and ultrasound assessment in post-surgical follow up of nerve injuries: A case report. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.06.176] [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: 10/26/2022]
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Franco PD, Coraci D, Tsukamoto H, Paolasso I, Granata G, Padua L. 41. Ultrasound diagnosis of Meralgia Paresthetica: Review of literature and presentation of 8 cases. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.06.068] [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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32
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Tsukamoto H, Coraci D, Paolasso I, Granata G, Padua L, Sonoo M. Sonographic evaluation of neuromas in patients with limb amputation. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.2224] [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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33
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Tsukamoto H, Stickel F, Seitz H, Rao R, Gangwar R, Samak G, Mir H, Chaudhry K, Manda B, Nagy L, Sood A, Nagy L, Chiang D, Roychowdhury S. S13 * MULTIPLE HITS IN THE PATHOGENESIS OF ALCOHOLIC LIVER DISEASE. Alcohol Alcohol 2013. [DOI: 10.1093/alcalc/agt119] [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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34
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Tsukamoto H, Farrens DL. A constitutively activating mutation alters the dynamics and energetics of a key conformational change in a ligand-free G protein-coupled receptor. J Biol Chem 2013; 288:28207-16. [PMID: 23940032 DOI: 10.1074/jbc.m113.472464] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
G protein-coupled receptors (GPCRs) undergo dynamic transitions between active and inactive conformations. Usually, these conversions are triggered when the receptor detects an external signal, but some so-called constitutively activating mutations, or CAMs, induce a GPCR to bind and activate G proteins in the absence of external stimulation, in ways still not fully understood. Here, we investigated how a CAM alters the structure of a GPCR and the dynamics involved as the receptor transitions between different conformations. Our approach used site-directed fluorescence labeling (SDFL) spectroscopy to compare opsin, the ligand-free form of the GPCR rhodopsin, with opsin containing the CAM M257Y, focusing specifically on key movements that occur in the sixth transmembrane helix (TM6) during GPCR activation. The site-directed fluorescence labeling data indicate opsin is constrained to an inactive conformation both in detergent micelles and lipid membranes, but when it contains the M257Y CAM, opsin is more dynamic and can interact with a G protein mimetic. Further study of these receptors using tryptophan-induced quenching (TrIQ) methods indicates that in detergent, the CAM significantly increases the population of receptors in the active state, but not in lipids. Subsequent Arrhenius analysis of the TrIQ data suggests that, both in detergent and lipids, the CAM lowers the energy barrier for TM6 movement, a key transition required for conversion between the inactive and active conformations. Together, these data suggest that the lowered energy barrier is a primary effect of the CAM on the receptor dynamics and energetics.
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Affiliation(s)
- Hisao Tsukamoto
- From the Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, Oregon 97239-3098
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Otsuka K, Miwa Y, Umemura M, Tsukamoto H, Tokunaga T, Furuya H, Yanai R, Isojima S, Wakabayashi K, Yajima N, Kasama T. AB0377 Efficacy of tacrolimus combination therapy during the maintenance phase of systemic lupus erythematosus. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2699] [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: 11/03/2022]
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36
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Tanaka A, Tsukamoto H, Mitoma H, Ueda N, Ayano M, Ohta SI, Inoue Y, Arinobu Y, Niiro H, Horiuchi T, Akashi K. THU0168 Serum progranulin levels are elevated in patients with systemic lupus erythematosus, reflecting disease activity. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2133] [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: 11/03/2022]
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Kasama T, Umemura M, Isojima S, Tokunaga T, Tsukamoto H, Yanai R, Furuya H, Miwa Y. SAT0141 Correlation of Serum Macrophage Migration Inhibitory Factor Levels With Response to Tocilizumab Therapy in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1867] [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: 11/04/2022]
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38
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Wakabayashi K, Umemura M, Tokunaga T, Tsukamoto H, Isojima S, Furuya H, Yanai R, Otsuka K, Takahashi R, Yajima N, Miwa Y, Kasama T. SAT0145 Plasma Levels of Fibrin/Fibrinogen Degradation Products are a Useful Indicator of Disease Activity and Nephritis Complications in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1871] [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: 11/04/2022]
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39
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Miwa Y, Isojima S, Umemura M, Tsukamoto H, Tokunaga T, Furuya H, Yanai R, Otsuka K, Takahashi R, Wakabayashi K, Yajima N, Kasama T, Hosaka M. AB0263 Correlation of cx3cl1 levels with adl, hrqol and depression to biologic agent therapy in patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2586] [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: 11/04/2022]
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40
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Tanaka A, Tsukamoto H, Ueda N, Ayano M, Ohta SI, Ueki N, Ueda S, Hisamoto S, Oryoji D, Hirosaki Y, Akahoshi M, Arinobu Y, Niiro H, Horiuchi T, Tada Y, Akashi K. THU0063 Serum Progranulin Levels are Elevated in Dermatomyositis Patients with Acute Interstitial Lung Disease, Reflecting Severity and Prognosis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.591] [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: 11/04/2022]
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41
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Yanai R, Isojima S, Tsukamoto H, Tokunaga T, Umemura M, Furuya H, Otsuka K, Takahashi R, Wakabayashi K, Yajima N, Miwa Y, Kasama T. THU0441 Potential Fatality Predictors Caused by Pneumocystis Pneumonia (PCP) in Rheumatic Disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.969] [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: 11/03/2022]
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42
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Miwa Y, Isojima S, Umemura M, Tsukamoto H, Tokunaga T, Furuya H, Yanai R, Otsuka K, Takahashi R, Wakabayashi K, Yajima N, Kasama T, Hosaka M. AB0200 Switching biologic agents in patients with rheumatoid arthritis: an observational study of 159 patients evaluating efficacy, adl, qol, and depression. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2523] [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: 11/04/2022]
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43
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Tsukamoto H, Horiuchi T, Miyamoto T, Niiro H, Arinobu Y, Akahoshi M, Ayano M, Tanaka A, Ueda N, Akashi K. FRI0406 Seven-year follow-up of autologous hematopoietic stem cell transplantation for severe systemic sclerosis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1533] [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: 11/04/2022]
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44
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Ueda N, Tsukamoto H, Mitoma H, Ayano M, Tanaka A, Ohta SI, Inoue Y, Arinobu Y, Niiro H, Akashi K, Horiuchi T. AB0482 The cytotoxic effects of certolizumab pegol and golimumab mediated by transmembrane tumor necrosis factor α. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.482] [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: 11/03/2022]
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45
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Tsukamoto H, Horiuchi T, Miyamoto T, Niiro H, Arinobu Y, Inoue Y, Ayano M, Tanaka A, Ueda N, Harada M, Akashi K. THU0238 Long-term follow-up of autologous hematopoietic stem cell transplantation for severe systemic sclerosis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2203] [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: 11/03/2022]
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46
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Huang B, Takahashi K, Sakata-Goto T, Kiso H, Togo Y, Saito K, Tsukamoto H, Sugai M, Akira S, Shimizu A, Bessho K. Phenotypes of CCAAT/enhancer-binding protein beta deficiency: hyperdontia and elongated coronoid process. Oral Dis 2012; 19:144-50. [PMID: 22849712 DOI: 10.1111/j.1601-0825.2012.01963.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES This investigation aimed to conduct a case-control study of mandibular morphology and dental anomalies to propose a relationship between mandibular/dental phenotypes and deficiency of CCAAT/enhancer-binding protein beta (CEBPB). MATERIALS AND METHODS Skulls of CEBPB(-/-), CEBPB(+/-) and CEBPB(+/+) mice were inspected with micro-computed tomography. Mandibular morphology was assessed with a method of Euclidean distance matrix analysis. RESULTS Elongation of the coronoid process was identified in CEBPB(+/-) (P ≤ 0.046) and CEBPB(-/-) 12-month-olds (P ≤ 0.028) but not in 14-day-olds (P ≥ 0.217) and 0-day-olds (P ≥ 0.189) of either genotype. Formation of supernumerary teeth in CEBPB(-/-) adult mice was demonstrated (χ(2) = 6.00, df = 1, P = 0.014). CONCLUSIONS CEBPB deficiency was related to elongation of the coronoid process and formation of supernumerary teeth. The mandibular and dental phenotypes of CEBPB deficiency were unseen by the 14th day after birth. Future investigations into the influence of CEBPB on mandibular and dental development are needed.
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Affiliation(s)
- B Huang
- Department of Paediatric Dentistry, School of Medicine and Dentistry, James Cook University, Cairns, Australia Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan Translational Research Center, Kyoto University Hospital, Kyoto University, Kyoto, Japan Laboratory of Host Defense, World Premier International Immunology Frontier Research Center, Osaka University, Osaka, Japan
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Abstract
Parietopsin is a nonvisual green light-sensitive opsin closely related to vertebrate visual opsins and was originally identified in lizard parietal eye photoreceptor cells. To obtain insight into the functional diversity of opsins, we investigated by UV-visible absorption spectroscopy the molecular properties of parietopsin and its mutants exogenously expressed in cultured cells and compared the properties to those of vertebrate and invertebrate visual opsins. Our mutational analysis revealed that the counterion in parietopsin is the glutamic acid (Glu) in the second extracellular loop, corresponding to Glu181 in bovine rhodopsin. This arrangement is characteristic of invertebrate rather than vertebrate visual opsins. The photosensitivity and the molar extinction coefficient of parietopsin were also lower than those of vertebrate visual opsins, features likewise characteristic of invertebrate visual opsins. On the other hand, irradiation of parietopsin yielded meta-I, meta-II, and meta-III intermediates after batho and lumi intermediates, similar to vertebrate visual opsins. The pH-dependent equilibrium profile between meta-I and meta-II intermediates was, however, similar to that between acid and alkaline metarhodopsins in invertebrate visual opsins. Thus, parietopsin behaves as an "evolutionary intermediate" between invertebrate and vertebrate visual opsins.
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Affiliation(s)
- Kazumi Sakai
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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48
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Nagata T, Koyanagi M, Tsukamoto H, Saeki S, Isono K, Shichida Y, Tokunaga F, Kinoshita M, Arikawa K, Terakita A. Depth Perception from Image Defocus in a Jumping Spider. Science 2012; 335:469-71. [DOI: 10.1126/science.1211667] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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49
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Nakatsuka A, Tsukamoto H, Shimokawa M, Nakayama N, Yoshiasa A. Static disorder of vanadium ion in NaSr 2Mg 2V 3O 12garnet. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311085461] [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: 11/11/2022] Open
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Tsukamoto H, Hatanaka Y, Hokkoku K, Chiba T, Ito E, Sonoo M, Shimizu T. P5.7 Activity dependent conduction block and distal conduction disturbance after exercise in anti-MAG neuropathy. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60271-x] [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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