1
|
Suzuki M, Okumura A, Chihara A, Shibata Y, Endo T, Teramoto M, Agata K, Bronner ME, Suzuki KIT. Fgf10 mutant newts regenerate normal hindlimbs despite severe developmental defects. Proc Natl Acad Sci U S A 2024; 121:e2314911121. [PMID: 38442169 PMCID: PMC10945807 DOI: 10.1073/pnas.2314911121] [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: 08/29/2023] [Accepted: 02/02/2024] [Indexed: 03/07/2024] Open
Abstract
In amniote limbs, Fibroblast Growth Factor 10 (FGF10) is essential for limb development, but whether this function is broadly conserved in tetrapods and/or involved in adult limb regeneration remains unknown. To tackle this question, we established Fgf10 mutant lines in the newt Pleurodeles waltl which has amazing regenerative ability. While Fgf10 mutant forelimbs develop normally, the hindlimbs fail to develop and downregulate FGF target genes. Despite these developmental defects, Fgf10 mutants were able to regenerate normal hindlimbs rather than recapitulating the embryonic phenotype. Together, our results demonstrate an important role for FGF10 in hindlimb formation, but little or no function in regeneration, suggesting that different mechanisms operate during limb regeneration versus development.
Collapse
Affiliation(s)
- Miyuki Suzuki
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
| | - Akinori Okumura
- Emerging Model Organisms Facility, Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki444-8585, Japan
| | - Akane Chihara
- Emerging Model Organisms Facility, Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki444-8585, Japan
| | - Yuki Shibata
- Emerging Model Organisms Facility, Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki444-8585, Japan
| | - Tetsuya Endo
- Division of Liberal Arts and Sciences, Aichi Gakuin University, Nisshin470-0195, Japan
| | - Machiko Teramoto
- Laboratory of Regeneration Biology, National Institute for Basic Biology, Okazaki444-8585, Japan
| | - Kiyokazu Agata
- Laboratory of Regeneration Biology, National Institute for Basic Biology, Okazaki444-8585, Japan
| | - Marianne E. Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA91125
| | - Ken-ichi T. Suzuki
- Emerging Model Organisms Facility, Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki444-8585, Japan
| |
Collapse
|
2
|
Yoshihi K, Iida H, Teramoto M, Ishii Y, Kato K, Kondoh H. Epiblast cells gather onto the anterior mesendoderm and initiate brain development without the direct involvement of the node in avian embryos: Insights from broad-field live imaging. Front Cell Dev Biol 2022; 10:1019845. [PMID: 36274851 PMCID: PMC9581324 DOI: 10.3389/fcell.2022.1019845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/06/2022] [Indexed: 12/04/2022] Open
Abstract
Live imaging of migrating and interacting cells in developing embryos has opened a new means for deciphering fundamental principles in morphogenesis and patterning, which was not possible with classic approaches of experimental embryology. In our recent study, we devised a new genetic tool to sparsely label cells with a green-fluorescent protein in the broad field of chicken embryos, enabling the analysis of cell migration during the early stages of brain development. Trajectory analysis indicated that anterior epiblast cells from a broad area gather to the head axis to form the brain primordia or brain-abutting head ectoderm. Grafting the mCherry-labeled stage (st.) 4 node in an anterior embryonic region resulted in the anterior extension of the anterior mesendoderm (AME), the precursor for the prechordal plate and anterior notochord, from the node graft at st. 5. Grafting the st. 4 node or st. 5 AME at various epiblast positions that otherwise develop into the head ectoderm caused local cell gathering to the graft-derived AME. The node was not directly associated with this local epiblast-gathering activity. The gathered anterior epiblast cells developed into secondary brain tissue consisting of consecutive brain portions, e.g., forebrain and midbrain or midbrain and hindbrain, reflecting the brain portion specificities inherent to the epiblast cells. The observations indicated the bipotentiality of all anterior epiblast cells to develop into the brain or head ectoderm. Thus, a new epiblast brain field map is proposed, allowing the reinterpretation of classical node graft data, and the role of the AME is highlighted. The new model leads to the conclusion that the node does not directly participate in brain development.
Collapse
Affiliation(s)
- Koya Yoshihi
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Hideaki Iida
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Machiko Teramoto
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
- National Institute for Basic Biology, Okazaki, Japan
| | - Yasuo Ishii
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
- Department of Biology, School of Medicine, Tokyo Women’s Medical University, Tokyo, Japan
| | - Kagayaki Kato
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
- JT Biohistory Research Hall, Takatsuki, Japan
- *Correspondence: Hisato Kondoh,
| |
Collapse
|
3
|
Miyoshi Y, Shinohara I, Ukhorskiy S, Claudepierre SG, Mitani T, Takashima T, Hori T, Santolik O, Kolmasova I, Matsuda S, Kasahara Y, Teramoto M, Katoh Y, Hikishima M, Kojima H, Kurita S, Imajo S, Higashio N, Kasahara S, Yokota S, Asamura K, Kazama Y, Wang SY, Jun CW, Kasaba Y, Kumamoto A, Tsuchiya F, Shoji M, Nakamura S, Kitahara M, Matsuoka A, Shiokawa K, Seki K, Nosé M, Takahashi K, Martinez-Calderon C, Hospodarsky G, Colpitts C, Kletzing C, Wygant J, Spence H, Baker DN, Reeves GD, Blake JB, Lanzerotti L. Collaborative Research Activities of the Arase and Van Allen Probes. Space Sci Rev 2022; 218:38. [PMID: 35757012 PMCID: PMC9213325 DOI: 10.1007/s11214-022-00885-4] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 03/23/2022] [Indexed: 06/15/2023]
Abstract
This paper presents the highlights of joint observations of the inner magnetosphere by the Arase spacecraft, the Van Allen Probes spacecraft, and ground-based experiments integrated into spacecraft programs. The concurrent operation of the two missions in 2017-2019 facilitated the separation of the spatial and temporal structures of dynamic phenomena occurring in the inner magnetosphere. Because the orbital inclination angle of Arase is larger than that of Van Allen Probes, Arase collected observations at higher L -shells up to L ∼ 10 . After March 2017, similar variations in plasma and waves were detected by Van Allen Probes and Arase. We describe plasma wave observations at longitudinally separated locations in space and geomagnetically-conjugate locations in space and on the ground. The results of instrument intercalibrations between the two missions are also presented. Arase continued its normal operation after the scientific operation of Van Allen Probes completed in October 2019. The combined Van Allen Probes (2012-2019) and Arase (2017-present) observations will cover a full solar cycle. This will be the first comprehensive long-term observation of the inner magnetosphere and radiation belts.
Collapse
Affiliation(s)
- Y. Miyoshi
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - I. Shinohara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210 Japan
| | - S. Ukhorskiy
- Applied Physics Laboratory, The Johns Hopkins University, 11101 Johns Hopkins Rd, Laurel, MD 20723 USA
| | - S. G. Claudepierre
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, 7115 Math Sciences Bldg., Los Angeles, CA 90095 USA
| | - T. Mitani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210 Japan
| | - T. Takashima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210 Japan
| | - T. Hori
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - O. Santolik
- Faculty of Mathematics an Physics, Charles University, V Holesovickach 2, 18000 Prague, Czechia
- Dept. of Space Physics, Institute of Atmospheric Physics, Czech Academy of Sciences, Bocni II 1401, 14100 Prague, Czechia
| | - I. Kolmasova
- Faculty of Mathematics an Physics, Charles University, V Holesovickach 2, 18000 Prague, Czechia
- Dept. of Space Physics, Institute of Atmospheric Physics, Czech Academy of Sciences, Bocni II 1401, 14100 Prague, Czechia
| | - S. Matsuda
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, 920-1192 Japan
| | - Y. Kasahara
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, 920-1192 Japan
| | - M. Teramoto
- Graduate School of Engineering, Kyushu Institute of Technology, Kitakyusyu, 804-8550 Japan
| | - Y. Katoh
- Graduate School of Science, Tohoku University, Sendai, 980-8578 Japan
| | - M. Hikishima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210 Japan
| | - H. Kojima
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011 Japan
| | - S. Kurita
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011 Japan
| | - S. Imajo
- Graduate School of Science, Kyoto University, Kyoto, 606-8502 Japan
| | - N. Higashio
- Strategic Planning and Management Department, Japan Aerospace Exploration Agency, Tokyo, 101-8008 Japan
| | - S. Kasahara
- Graduate School of Science, University of Tokyo, Tokyo, 113-0033 Japan
| | - S. Yokota
- Graduate School of Science, Osaka University, Toyonaka, 560-0043 Japan
| | - K. Asamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210 Japan
| | - Y. Kazama
- Institute of Astronomy and Astrophysics, Academia Sinica, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617 Taiwan
| | - S.-Y. Wang
- Institute of Astronomy and Astrophysics, Academia Sinica, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617 Taiwan
| | - C.-W. Jun
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - Y. Kasaba
- Graduate School of Science, Tohoku University, Sendai, 980-8578 Japan
| | - A. Kumamoto
- Graduate School of Science, Tohoku University, Sendai, 980-8578 Japan
| | - F. Tsuchiya
- Graduate School of Science, Tohoku University, Sendai, 980-8578 Japan
| | - M. Shoji
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - S. Nakamura
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
- Institute for Advanced Research, Nagoya University, Nagoya, 464-8601 Japan
| | - M. Kitahara
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
- Graduate School of Science, Tohoku University, Sendai, 980-8578 Japan
| | - A. Matsuoka
- Graduate School of Science, Kyoto University, Kyoto, 606-8502 Japan
| | - K. Shiokawa
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - K. Seki
- Graduate School of Science, University of Tokyo, Tokyo, 113-0033 Japan
| | - M. Nosé
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - K. Takahashi
- Applied Physics Laboratory, The Johns Hopkins University, 11101 Johns Hopkins Rd, Laurel, MD 20723 USA
| | - C. Martinez-Calderon
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601 Japan
| | - G. Hospodarsky
- Department of Physics and Astronomy, University of Iowa, Van Allen Hall (VAN), Iowa City, IA 52242 USA
| | - C. Colpitts
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455 USA
| | - Craig Kletzing
- Department of Physics and Astronomy, University of Iowa, Van Allen Hall (VAN), Iowa City, IA 52242 USA
| | - J. Wygant
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455 USA
| | - H. Spence
- Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, 8 College Road, Durham, NH 03824 USA
| | - D. N. Baker
- Laboratory for Atmospheric and Space Physics, University of Colorado, 3665 Discovery Drive, 600 UCB, Boulder, CO 80303 USA
| | - G. D. Reeves
- Inteligence & Space Reserarch Division, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM USA
| | - J. B. Blake
- The Aerospace Corporation, P.O. Box 92957, Los Angeles, CA 90009-2957 USA
| | - L. Lanzerotti
- Department of Physics, New Jersey Institute of Technology, Newark, NJ 07102 USA
| |
Collapse
|
4
|
Yoshihi K, Kato K, Iida H, Teramoto M, Kawamura A, Watanabe Y, Nunome M, Nakano M, Matsuda Y, Sato Y, Mizuno H, Iwasato T, Ishii Y, Kondoh H. Live imaging of avian epiblast and anterior mesendoderm grafting reveals the complexity of cell dynamics during early brain development. Development 2022; 149:274289. [PMID: 35132990 PMCID: PMC9017232 DOI: 10.1242/dev.199999] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 01/18/2022] [Indexed: 11/20/2022]
Abstract
Despite previous intensive investigations on epiblast cell migration in avian embryos during primitive streak development before stage (st.) 4, this migration at later stages of brain development has remained uninvestigated. By live imaging of epiblast cells sparsely labeled with green fluorescence protein, we investigated anterior epiblast cell migration to form individual brain portions. Anterior epiblast cells from a broad area migrated collectively towards the head axis during st. 5-7 at a rate of 70-110 µm/h, changing directions from diagonal to parallel and forming the brain portions and abutting head ectoderm. This analysis revised the previously published head portion precursor map in anterior epiblasts at st. 4/5. Grafting outside the brain precursor region of mCherry-expressing nodes producing anterior mesendoderm (AME) or isolated AME tissues elicited new cell migration towards ectopic AME tissues. These locally convergent cells developed into secondary brains with portions that depended on the ectopic AME position in the anterior epiblast. Thus, anterior epiblast cells are bipotent for brain/head ectoderm development with given brain portion specificities. A brain portion potential map is proposed, also accounting for previous observations. Summary: The first high-resolution live imaging of anterior epiblast cells at the brain-forming stages in avian embryos is reported, revealing their long-distance migration and interaction with the anterior mesendoderm to form brain tissues.
Collapse
Affiliation(s)
- Koya Yoshihi
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Kagayaki Kato
- National Institutes of Natural Sciences, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute for Basic Biology, Okazaki, Aichi 444-8787, Japan
| | - Hideaki Iida
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Machiko Teramoto
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Akihito Kawamura
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Yusaku Watanabe
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Mitsuo Nunome
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Mikiharu Nakano
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yoichi Matsuda
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yuki Sato
- Department of Anatomy and Cell Biology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hidenobu Mizuno
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics (NIG), Mishima, Shizuoka 411-8540, Japan.,International Research Center for Medical Sciences (IRCMS), Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto City 860-0811, Japan
| | - Takuji Iwasato
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics (NIG), Mishima, Shizuoka 411-8540, Japan
| | - Yasuo Ishii
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,Department of Biology, School of Medicine, Tokyo Women's Medical University, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,Institute for Comprehensive Research, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan.,JT Biohistory Research Hall, 1-1 Murasaki-cho, Takatsuki, Osaka 569-1125, Japan
| |
Collapse
|
5
|
Finet C, Kassner VA, Carvalho AB, Chung H, Day JP, Day S, Delaney EK, De Ré FC, Dufour HD, Dupim E, Izumitani HF, Gautério TB, Justen J, Katoh T, Kopp A, Koshikawa S, Longdon B, Loreto EL, Nunes MDS, Raja KKB, Rebeiz M, Ritchie MG, Saakyan G, Sneddon T, Teramoto M, Tyukmaeva V, Vanderlinde T, Wey EE, Werner T, Williams TM, Robe LJ, Toda MJ, Marlétaz F. DrosoPhyla: Resources for Drosophilid Phylogeny and Systematics. Genome Biol Evol 2021; 13:evab179. [PMID: 34343293 PMCID: PMC8382681 DOI: 10.1093/gbe/evab179] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [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] [Accepted: 08/01/2021] [Indexed: 02/06/2023] Open
Abstract
The vinegar fly Drosophila melanogaster is a pivotal model for invertebrate development, genetics, physiology, neuroscience, and disease. The whole family Drosophilidae, which contains over 4,400 species, offers a plethora of cases for comparative and evolutionary studies. Despite a long history of phylogenetic inference, many relationships remain unresolved among the genera, subgenera, and species groups in the Drosophilidae. To clarify these relationships, we first developed a set of new genomic markers and assembled a multilocus data set of 17 genes from 704 species of Drosophilidae. We then inferred a species tree with highly supported groups for this family. Additionally, we were able to determine the phylogenetic position of some previously unplaced species. These results establish a new framework for investigating the evolution of traits in fruit flies, as well as valuable resources for systematics.
Collapse
Affiliation(s)
- Cédric Finet
- Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, USA
| | - Victoria A Kassner
- Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, USA
| | - Antonio B Carvalho
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Brazil
| | - Henry Chung
- Department of Entomology, Michigan State University, USA
| | - Jonathan P Day
- Department of Genetics, University of Cambridge, United Kingdom
| | - Stephanie Day
- Department of Biological Sciences, University of Pittsburgh, USA
| | - Emily K Delaney
- Department of Evolution and Ecology, University of California-Davis, USA
| | - Francine C De Ré
- Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Rio Grande do Sul, Brazil
| | - Héloïse D Dufour
- Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, USA
| | - Eduardo Dupim
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Brazil
| | - Hiroyuki F Izumitani
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Thaísa B Gautério
- Programa de Pós-Graduação em Biologia de Ambientes Aquáticos Continentais, Universidade Federal do Rio Grande, Rio Grande do Sul, Brazil
| | - Jessa Justen
- Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, USA
| | - Toru Katoh
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Artyom Kopp
- Department of Evolution and Ecology, University of California-Davis, USA
| | - Shigeyuki Koshikawa
- The Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Japan
| | - Ben Longdon
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Elgion L Loreto
- Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Rio Grande do Sul, Brazil
| | - Maria D S Nunes
- Department of Biological and Medical Sciences, Oxford Brookes University, United Kingdom
- Centre for Functional Genomics, Oxford Brookes University, United Kingdom
| | - Komal K B Raja
- Department of Biological Sciences, Michigan Technological University, USA
| | - Mark Rebeiz
- Department of Biological Sciences, University of Pittsburgh, USA
| | | | - Gayane Saakyan
- Department of Evolution and Ecology, University of California-Davis, USA
| | - Tanya Sneddon
- School of Biology, University of St Andrews, United Kingdom
| | - Machiko Teramoto
- The Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Japan
| | | | - Thyago Vanderlinde
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Brazil
| | - Emily E Wey
- Department of Biology, University of Dayton, USA
| | - Thomas Werner
- Department of Biological Sciences, Michigan Technological University, USA
| | | | - Lizandra J Robe
- Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Biologia de Ambientes Aquáticos Continentais, Universidade Federal do Rio Grande, Rio Grande do Sul, Brazil
| | - Masanori J Toda
- Hokkaido University Museum, Hokkaido University, Sapporo, Japan
| | - Ferdinand Marlétaz
- Centre for Life’s Origins and Evolution, Department of Genetics, Evolution and Environment, University College London, United Kingdom
| |
Collapse
|
6
|
Miyoshi Y, Hosokawa K, Kurita S, Oyama SI, Ogawa Y, Saito S, Shinohara I, Kero A, Turunen E, Verronen PT, Kasahara S, Yokota S, Mitani T, Takashima T, Higashio N, Kasahara Y, Matsuda S, Tsuchiya F, Kumamoto A, Matsuoka A, Hori T, Keika K, Shoji M, Teramoto M, Imajo S, Jun C, Nakamura S. Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae. Sci Rep 2021; 11:13724. [PMID: 34257336 PMCID: PMC8277844 DOI: 10.1038/s41598-021-92611-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 03/16/2021] [Accepted: 06/14/2021] [Indexed: 11/16/2022] Open
Abstract
Pulsating aurorae (PsA) are caused by the intermittent precipitations of magnetospheric electrons (energies of a few keV to a few tens of keV) through wave-particle interactions, thereby depositing most of their energy at altitudes ~ 100 km. However, the maximum energy of precipitated electrons and its impacts on the atmosphere are unknown. Herein, we report unique observations by the European Incoherent Scatter (EISCAT) radar showing electron precipitations ranging from a few hundred keV to a few MeV during a PsA associated with a weak geomagnetic storm. Simultaneously, the Arase spacecraft has observed intense whistler-mode chorus waves at the conjugate location along magnetic field lines. A computer simulation based on the EISCAT observations shows immediate catalytic ozone depletion at the mesospheric altitudes. Since PsA occurs frequently, often in daily basis, and extends its impact over large MLT areas, we anticipate that the PsA possesses a significant forcing to the mesospheric ozone chemistry in high latitudes through high energy electron precipitations. Therefore, the generation of PsA results in the depletion of mesospheric ozone through high-energy electron precipitations caused by whistler-mode chorus waves, which are similar to the well-known effect due to solar energetic protons triggered by solar flares.
Collapse
Affiliation(s)
- Y Miyoshi
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan.
| | - K Hosokawa
- Graduate School of Communication Engineering and Informatics, University of Electro-Communications, Chofu, 182-8585, Japan
| | - S Kurita
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011, Japan
| | - S-I Oyama
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan.,National Institute of Polar Research, Tachikawa, 190-8518, Japan.,University of Oulu, Pentti Kaiteran katu 1, Linnanmaa, Oulu, Finland
| | - Y Ogawa
- National Institute of Polar Research, Tachikawa, 190-8518, Japan.,The Graduate University for Advanced Studies, SOKENDAI, Hayama, 240-0193, Japan.,Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Tachikawa, 190-8518, Japan
| | - S Saito
- National Institute of Information and Communications Technology, Tokyo, 184-8795, Japan
| | - I Shinohara
- Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210, Japan
| | - A Kero
- Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland
| | - E Turunen
- Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland
| | - P T Verronen
- Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland.,Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
| | - S Kasahara
- Graduate School of Science, University of Tokyo, Tokyo, 113-0033, Japan
| | - S Yokota
- Graduate School of Science, Osaka University, Toyonaka, 560-0043, Japan
| | - T Mitani
- Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210, Japan
| | - T Takashima
- Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210, Japan
| | - N Higashio
- Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210, Japan
| | - Y Kasahara
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, 920-1192, Japan
| | - S Matsuda
- Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210, Japan
| | - F Tsuchiya
- Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - A Kumamoto
- Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - A Matsuoka
- Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - T Hori
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan
| | - K Keika
- Graduate School of Science, University of Tokyo, Tokyo, 113-0033, Japan
| | - M Shoji
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan
| | - M Teramoto
- Graduate School of Engineering, Kyushu Institute of Technology, Fukuoka, 820-8501, Japan
| | - S Imajo
- Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - C Jun
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan
| | - S Nakamura
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, 464-8601, Japan
| |
Collapse
|
7
|
Nosé M, Matsuoka A, Kumamoto A, Kasahara Y, Teramoto M, Kurita S, Goldstein J, Kistler LM, Singh S, Gololobov A, Shiokawa K, Imajo S, Oimatsu S, Yamamoto K, Obana Y, Shoji M, Tsuchiya F, Shinohara I, Miyoshi Y, Kurth WS, Kletzing CA, Smith CW, MacDowall RJ, Spence H, Reeves GD. Oxygen torus and its coincidence with EMIC wave in the deep inner magnetosphere: Van Allen Probe B and Arase observations. Earth Planets Space 2020; 72:111. [PMID: 32831576 PMCID: PMC7410109 DOI: 10.1186/s40623-020-01235-w] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
We investigate the longitudinal structure of the oxygen torus in the inner magnetosphere for a specific event found on 12 September 2017, using simultaneous observations from the Van Allen Probe B and Arase satellites. It is found that Probe B observed a clear enhancement in the average plasma mass (M) up to 3-4 amu at L = 3.3-3.6 and magnetic local time (MLT) = 9.0 h. In the afternoon sector at MLT ~ 16.0 h, both Probe B and Arase found no clear enhancements in M. This result suggests that the oxygen torus does not extend over all MLT but is skewed toward the dawn. Since a similar result has been reported for another event of the oxygen torus in a previous study, a crescent-shaped torus or a pinched torus centered around dawn may be a general feature of the O+ density enhancement in the inner magnetosphere. We newly find that an electromagnetic ion cyclotron (EMIC) wave in the H+ band appeared coincidently with the oxygen torus. From the lower cutoff frequency of the EMIC wave, the ion composition of the oxygen torus is estimated to be 80.6% H+, 3.4% He+, and 16.0% O+. According to the linearized dispersion relation for EMIC waves, both He+ and O+ ions inhibit EMIC wave growth and the stabilizing effect is stronger for He+ than O+. Therefore, when the H+ fraction or M is constant, the denser O+ ions are naturally accompanied by the more tenuous He+ ions, resulting in a weaker stabilizing effect (i.e., larger growth rate). From the Probe B observations, we find that the growth rate becomes larger in the oxygen torus than in the adjacent regions in the plasma trough and the plasmasphere.
Collapse
Affiliation(s)
- M. Nosé
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - A. Matsuoka
- Graduate School of Science, Kyoto University, Kyoto, Japan
| | - A. Kumamoto
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - Y. Kasahara
- Advanced Research Center for Space Science and Technology, Kanazawa University, Kanazawa, Japan
| | - M. Teramoto
- Department of Space Systems Engineering, Kyushu Institute of Technology, Kitakyusyu, Japan
| | - S. Kurita
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan
| | - J. Goldstein
- Space Science and Engineering Division, Southwest Research Institute, San Antonio, TX USA
- University of Texas at San Antonio, San Antonio, TX USA
| | - L. M. Kistler
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
- Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH USA
| | - S. Singh
- Indian Institute of Geomagnetism, Navi Mumbai, India
| | - A. Gololobov
- North-Eastern Federal University, Yakutsk, Russia
| | - K. Shiokawa
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - S. Imajo
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - S. Oimatsu
- Graduate School of Science, Kyoto University, Kyoto, Japan
| | - K. Yamamoto
- Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Y. Obana
- Faculty of Engineering, Osaka Electro-Communication University, Neyagawa, Japan
| | - M. Shoji
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - F. Tsuchiya
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - I. Shinohara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - Y. Miyoshi
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - W. S. Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA USA
| | - C. A. Kletzing
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA USA
| | - C. W. Smith
- Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH USA
| | - R. J. MacDowall
- Solar System Exploration Division, Goddard Space Flight Center, Greenbelt, MD USA
| | - H. Spence
- Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH USA
| | - G. D. Reeves
- Space Sciences and Applications Group, Los Alamos National Laboratory, Los Alamos, NM USA
| |
Collapse
|
8
|
Taira Y, Ikuta Y, Inamori S, Nunome M, Nakano M, Suzuki T, Matsuda Y, Tsudzuki M, Teramoto M, Iida H, Kondoh H. The formation of multiple pituitary pouches from the oral ectoderm causes ectopic lens development in hedgehog signaling-defective avian embryos. Dev Dyn 2020; 249:1425-1439. [PMID: 32633438 DOI: 10.1002/dvdy.222] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/26/2020] [Accepted: 07/02/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Hedgehog signaling has various regulatory functions in tissue morphogenesis and differentiation. To investigate its involvement in anterior pituitary precursor development and the lens precursor potential for anterior pituitary precursors, we investigated Talpid mutant Japanese quail embryos, in which hedgehog signaling is defective. RESULTS Talpid mutants develop multiple pituitary precursor-like pouches of variable sizes from the oral ectoderm (OE). The ectopic pituitary pouches initially express the pituitary-associated transcription factor (TF) LHX3 similarly to Rathke's pouch, the genuine pituitary precursor. The pouches coexpress the TFs SOX2 and PAX6, a signature of lens developmental potential. Most Talpid mutant pituitary pouches downregulate LHX3 expression and activate the lens-essential TF PROX1, leading to the development of small lens tissue expressing α-, β-, and δ-crystallins. In contrast, mutant Rathke's pouches express a lower level of LHX3, which is primarily localized in the cytoplasm, and activate the lens developmental pathway. CONCLUSIONS Hedgehog signaling in normal embryos regulates the development of Rathke's pouch in two steps. First, by confining Rathke's pouch development in a low hedgehog signaling region of the OE. Second, by sustaining LHX3 activity to promote anterior pituitary development, while inhibiting ectopic lens development.
Collapse
Affiliation(s)
- Yuki Taira
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Yuya Ikuta
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Sachiko Inamori
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Mitsuo Nunome
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Mikiharu Nakano
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Takayuki Suzuki
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Yoichi Matsuda
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Masaoki Tsudzuki
- Graduate School of Integrated Sciences for Life, and Japanese Avian Bioresources Project Research Center, Hiroshima University, Hiroshima, Japan
| | - Machiko Teramoto
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan
| | - Hideaki Iida
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan.,Institute for Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| |
Collapse
|
9
|
Inamori S, Fujii M, Satake S, Iida H, Teramoto M, Sumi T, Meno C, Ishii Y, Kondoh H. Modeling early stages of endoderm development in epiblast stem cell aggregates with supply of extracellular matrices. Dev Growth Differ 2020; 62:243-259. [PMID: 32277710 PMCID: PMC7318635 DOI: 10.1111/dgd.12663] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 12/18/2022]
Abstract
Endoderm precursors expressing FoxA2 and Sox17 develop from the epiblast through the gastrulation process. In this study, we developed an experimental system to model the endoderm-generating gastrulation process using epiblast stem cells (EpiSCs). To this end, we established an EpiSC line i22, in which enhanced green fluorescent protein is coexpressed with Foxa2. Culturing i22 EpiSCs as aggregates for a few days was sufficient to initiate Foxa2 expression, and further culturing of the aggregates in Matrigel promoted the sequential activation of transcription factor genes involved in endoderm precursor development, e.g., Eomes, Gsc, and Sox17. In aggregation culture of i22 cells for 3 days, all cells expressed POU5F1, SOX2, and E-cadherin, a signature of the epiblast, whereas expression of GATA4 and SOX17 was also activated moderately in dispersed cells, suggesting priming of these cells to endodermal development. Embedding the aggregates in Matrigel for further 3 days elicited migration of the cells into the lumen of laminin-rich matrices covering the aggregates, in which FOXA2 and SOX17 were expressed at a high level with the concomitant loss of E-cadherin, indicating the migratory phase of endodermal precursors. Prolonged culturing of the aggregates generated three segregating cell populations found in post-gastrulation stage embryos: (1) definitive endoderm co-expressing high SOX17, GATA4, and E-cadherin, (2) mesodermal cells expressing a low level of GATA4 and lacking E-cadherin, and (3) primed epiblast cells expressing POU5F1, SOX2 without E-cadherin. Thus, aggregation of EpiSCs followed by embedding of aggregates in the laminin-rich matrix models the gastrulation-dependent endoderm precursor development.
Collapse
Affiliation(s)
- Sachiko Inamori
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Mai Fujii
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Sayaka Satake
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Hideaki Iida
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Machiko Teramoto
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Tomoyuki Sumi
- Department of Developmental Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Chikara Meno
- Department of Developmental Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuo Ishii
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan.,Department of Biology, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| |
Collapse
|
10
|
Teramoto M, Sugawara R, Minegishi K, Uchikawa M, Takemoto T, Kuroiwa A, Ishii Y, Kondoh H. The absence of SOX2 in the anterior foregut alters the esophagus into trachea and bronchi in both epithelial and mesenchymal components. Biol Open 2020; 9:bio048728. [PMID: 31988094 PMCID: PMC7044460 DOI: 10.1242/bio.048728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 10/14/2019] [Accepted: 01/09/2020] [Indexed: 11/20/2022] Open
Abstract
In the anterior foregut (AFG) of mouse embryos, the transcription factor SOX2 is expressed in the epithelia of the esophagus and proximal branches of respiratory organs comprising the trachea and bronchi, whereas NKX2.1 is expressed only in the epithelia of respiratory organs. Previous studies using hypomorphic Sox2 alleles have indicated that reduced SOX2 expression causes the esophageal epithelium to display some respiratory organ characteristics. In the present study, we produced mouse embryos with AFG-specific SOX2 deficiency. In the absence of SOX2 expression, a single NKX2.1-expressing epithelial tube connected the pharynx and the stomach, and a pair of bronchi developed in the middle of the tube. Expression patterns of NKX2.1 and SOX9 revealed that the anterior and posterior halves of SOX2-deficient AFG epithelial tubes assumed the characteristics of the trachea and bronchus, respectively. In addition, we found that mesenchymal tissues surrounding the SOX2-deficient NKX2.1-expressing epithelial tube changed to those surrounding the trachea and bronchi in the anterior and posterior halves, as indicated by the arrangement of smooth muscle cells and SOX9-expressing cells and by the expression of Wnt4 (esophagus specific), Tbx4 (respiratory organ specific), and Hoxb6 (distal bronchus specific). The impact of mesenchyme-derived signaling on the early stage of AFG epithelial specification has been indicated. Our study demonstrated an opposite trend where epithelial tissue specification causes concordant changes in mesenchymal tissues, indicating a reciprocity of epithelial-mesenchymal interactions.
Collapse
Affiliation(s)
- Machiko Teramoto
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
| | - Ryo Sugawara
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
| | - Katsura Minegishi
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Masanori Uchikawa
- Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Tatsuya Takemoto
- Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima 770-8503, Japan
| | - Atsushi Kuroiwa
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Yasuo Ishii
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
- Department of Biology, School of Medicine, Tokyo Women's Medical University, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kita-ku, Kyoto 603-8555, Japan
| |
Collapse
|
11
|
Iida H, Furukawa Y, Teramoto M, Suzuki H, Takemoto T, Uchikawa M, Kondoh H. Sox2 gene regulation via the D1 enhancer in embryonic neural tube and neural crest by the combined action of SOX2 and ZIC2. Genes Cells 2020; 25:242-256. [PMID: 31997540 DOI: 10.1111/gtc.12753] [Citation(s) in RCA: 7] [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] [Received: 01/07/2020] [Revised: 01/26/2020] [Accepted: 01/27/2020] [Indexed: 01/12/2023]
Abstract
The transcription factor (TF) SOX2 regulates various stem cells and tissue progenitors via functional interactions with cell type-specific partner TFs that co-bind to enhancer sequences. Neural progenitors are the major embryonic tissues where SOX2 assumes central regulatory roles. In order to characterize the partner TFs of SOX2 in neural progenitors, we investigated the regulation of the D1 enhancer of the Sox2 gene, which is activated in the embryonic neural tube (NT) and neural crest (NC), using chicken embryo electroporation. We identified essential TF binding sites for a SOX, and two ZIC TFs in the activation of the D1 enhancer. By comparison of dorso-ventral and antero-posterior patterns of D1 enhancer activation, and the effect of mutations on the enhancer activation patterns with TF expression patterns, we determined SOX2 and ZIC2 as the major D1 enhancer-activating TFs. Binding of these TFs to the D1 enhancer sequence was confirmed by chromatin immunoprecipitation analysis. The combination of SOX2 and ZIC2 TFs activated the enhancer in both the NT and NC. These results indicate that SOX2 and ZIC2, which have been known to play major regulatory roles in neural progenitors, do functionally cooperate. In addition, the recently demonstrated SOX2 expression during the NC development is accounted for at least partly by the D1 enhancer activity. Deletion of the D1 enhancer sequence from the mouse genome, however, did not affect the mouse development, indicating functional redundancies of other enhancers.
Collapse
Affiliation(s)
- Hideaki Iida
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Yoko Furukawa
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Machiko Teramoto
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| | - Hitomi Suzuki
- Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Tatsuya Takemoto
- Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Masanori Uchikawa
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Hisato Kondoh
- Faculty of Life Sciences and Institutes for Protein Dynamics and Comprehensive Research, Kyoto Sangyo University, Kyoto, Japan
| |
Collapse
|
12
|
Angelopoulos V, Cruce P, Drozdov A, Grimes EW, Hatzigeorgiu N, King DA, Larson D, Lewis JW, McTiernan JM, Roberts DA, Russell CL, Hori T, Kasahara Y, Kumamoto A, Matsuoka A, Miyashita Y, Miyoshi Y, Shinohara I, Teramoto M, Faden JB, Halford AJ, McCarthy M, Millan RM, Sample JG, Smith DM, Woodger LA, Masson A, Narock AA, Asamura K, Chang TF, Chiang CY, Kazama Y, Keika K, Matsuda S, Segawa T, Seki K, Shoji M, Tam SWY, Umemura N, Wang BJ, Wang SY, Redmon R, Rodriguez JV, Singer HJ, Vandegriff J, Abe S, Nose M, Shinbori A, Tanaka YM, UeNo S, Andersson L, Dunn P, Fowler C, Halekas JS, Hara T, Harada Y, Lee CO, Lillis R, Mitchell DL, Argall MR, Bromund K, Burch JL, Cohen IJ, Galloy M, Giles B, Jaynes AN, Le Contel O, Oka M, Phan TD, Walsh BM, Westlake J, Wilder FD, Bale SD, Livi R, Pulupa M, Whittlesey P, DeWolfe A, Harter B, Lucas E, Auster U, Bonnell JW, Cully CM, Donovan E, Ergun RE, Frey HU, Jackel B, Keiling A, Korth H, McFadden JP, Nishimura Y, Plaschke F, Robert P, Turner DL, Weygand JM, Candey RM, Johnson RC, Kovalick T, Liu MH, McGuire RE, Breneman A, Kersten K, Schroeder P. The Space Physics Environment Data Analysis System (SPEDAS). Space Sci Rev 2019; 215:9. [PMID: 30880847 PMCID: PMC6380193 DOI: 10.1007/s11214-018-0576-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 12/29/2018] [Indexed: 05/31/2023]
Abstract
With the advent of the Heliophysics/Geospace System Observatory (H/GSO), a complement of multi-spacecraft missions and ground-based observatories to study the space environment, data retrieval, analysis, and visualization of space physics data can be daunting. The Space Physics Environment Data Analysis System (SPEDAS), a grass-roots software development platform (www.spedas.org), is now officially supported by NASA Heliophysics as part of its data environment infrastructure. It serves more than a dozen space missions and ground observatories and can integrate the full complement of past and upcoming space physics missions with minimal resources, following clear, simple, and well-proven guidelines. Free, modular and configurable to the needs of individual missions, it works in both command-line (ideal for experienced users) and Graphical User Interface (GUI) mode (reducing the learning curve for first-time users). Both options have "crib-sheets," user-command sequences in ASCII format that can facilitate record-and-repeat actions, especially for complex operations and plotting. Crib-sheets enhance scientific interactions, as users can move rapidly and accurately from exchanges of technical information on data processing to efficient discussions regarding data interpretation and science. SPEDAS can readily query and ingest all International Solar Terrestrial Physics (ISTP)-compatible products from the Space Physics Data Facility (SPDF), enabling access to a vast collection of historic and current mission data. The planned incorporation of Heliophysics Application Programmer's Interface (HAPI) standards will facilitate data ingestion from distributed datasets that adhere to these standards. Although SPEDAS is currently Interactive Data Language (IDL)-based (and interfaces to Java-based tools such as Autoplot), efforts are under-way to expand it further to work with python (first as an interface tool and potentially even receiving an under-the-hood replacement). We review the SPEDAS development history, goals, and current implementation. We explain its "modes of use" with examples geared for users and outline its technical implementation and requirements with software developers in mind. We also describe SPEDAS personnel and software management, interfaces with other organizations, resources and support structure available to the community, and future development plans. ELECTRONIC SUPPLEMENTARY MATERIAL The online version of this article (10.1007/s11214-018-0576-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- V. Angelopoulos
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - P. Cruce
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - A. Drozdov
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - E. W. Grimes
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - N. Hatzigeorgiu
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - D. A. King
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - D. Larson
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - J. W. Lewis
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - J. M. McTiernan
- Space Sciences Laboratory, University of California, Berkeley, USA
| | | | - C. L. Russell
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - T. Hori
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | | | - A. Kumamoto
- Tohoku University, 6-3, Aoba, Aramaki, Aoba Sendai, 980-8578 Japan
| | - A. Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - Y. Miyashita
- Korea Astronomy and Space Science Institute, Daejeon, South Korea
| | - Y. Miyoshi
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - I. Shinohara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - M. Teramoto
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | | | - A. J. Halford
- Space Sciences Department, The Aerospace Corporation, Chantilly, VA USA
| | - M. McCarthy
- Department of Earth and Space Sciences, University of Washington, Seattle, WA USA
| | - R. M. Millan
- Department of Physics and Astronomy, Dartmouth College, Hanover, NH USA
| | - J. G. Sample
- Department of Physics, Montana State University, Bozeman, MT USA
| | - D. M. Smith
- Santa Cruz Institute of Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 USA
| | - L. A. Woodger
- Department of Physics and Astronomy, Dartmouth College, Hanover, NH USA
| | - A. Masson
- European Space Agency, ESAC, SCI-OPD, Madrid, Spain
| | - A. A. Narock
- ADNET Systems Inc., NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - K. Asamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T. F. Chang
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - C.-Y. Chiang
- Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Y. Kazama
- Academia Sinica Institute of Astronomy and Astrophysics, Taipei, Taiwan
| | - K. Keika
- Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - S. Matsuda
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - T. Segawa
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - K. Seki
- Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - M. Shoji
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - S. W. Y. Tam
- Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan
| | - N. Umemura
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - B.-J. Wang
- Academia Sinica Institute of Astronomy and Astrophysics, Taipei, Taiwan
- Graduate Institute of Space Science, National Central University, Taoyuan, Taiwan
| | - S.-Y. Wang
- Academia Sinica Institute of Astronomy and Astrophysics, Taipei, Taiwan
| | - R. Redmon
- National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Boulder, CO USA
| | - J. V. Rodriguez
- National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Boulder, CO USA
- Cooperative Institute for Research in Environmental Sciences (CIRES) at University of Colorado at Boulder, Boulder, CO USA
| | - H. J. Singer
- Space Weather Prediction Center, National Oceanic and Atmospheric Administration, Boulder, CO USA
| | - J. Vandegriff
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD USA
| | - S. Abe
- International Center for Space Weather Science and Education, Kyushu University, Fukuoka, Japan
| | - M. Nose
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
- World Data Center for Geomagnetism, Kyoto Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University, Kyoto, Japan
| | - A. Shinbori
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - Y.-M. Tanaka
- National Institute of Polar Research, Tokyo, Japan
| | - S. UeNo
- Hida Observatory, Kyoto University, Kyoto, Japan
| | - L. Andersson
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - P. Dunn
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - C. Fowler
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - J. S. Halekas
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA USA
| | - T. Hara
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - Y. Harada
- Department of Geophysics, Kyoto University, Kyoto, Japan
| | - C. O. Lee
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - R. Lillis
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - D. L. Mitchell
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - M. R. Argall
- Physics Department and Space Science Center, University of New Hampshire, Durham, NH USA
| | - K. Bromund
- NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - J. L. Burch
- Southwest Research Institute, San Antonio, TX USA
| | - I. J. Cohen
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD USA
| | - M. Galloy
- National Center for Atmospheric Research, Boulder, CO USA
| | - B. Giles
- NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - A. N. Jaynes
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA USA
| | - O. Le Contel
- Laboratoire de Physique des Plasmas, CNRS/Ecole Polytechnique/Sorbonne Université/Univ. Paris Sud/Observatoire de Paris, Paris, France
| | - M. Oka
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - T. D. Phan
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - B. M. Walsh
- Center for Space Physics, Department of Mechanical Engineering, Boston University, Boston, MA USA
| | - J. Westlake
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD USA
| | - F. D. Wilder
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - S. D. Bale
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - R. Livi
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - M. Pulupa
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - P. Whittlesey
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - A. DeWolfe
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - B. Harter
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - E. Lucas
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - U. Auster
- Institute for Geophysics and Extraterrestrial Physics, Technical University of Braunschweig, Braunschweig, Germany
| | - J. W. Bonnell
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - C. M. Cully
- University of Calgary, Calgary, Ontario Canada
| | - E. Donovan
- University of Calgary, Calgary, Ontario Canada
| | - R. E. Ergun
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO USA
| | - H. U. Frey
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - B. Jackel
- University of Calgary, Calgary, Ontario Canada
| | - A. Keiling
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - H. Korth
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD USA
| | - J. P. McFadden
- Space Sciences Laboratory, University of California, Berkeley, USA
| | - Y. Nishimura
- Center for Space Physics and Department of Electrical and Computer Engineering, Boston University, Boston, MA USA
| | - F. Plaschke
- Space Research Institute, Austrian Academy of Sciences, Institute of Physics, University of Graz, Graz, Austria
| | - P. Robert
- Laboratoire de Physique des Plasmas, CNRS/Ecole Polytechnique/Sorbonne Université/Univ. Paris Sud/Observatoire de Paris, Paris, France
| | | | - J. M. Weygand
- Department of Earth, Planetary and Space Sciences, and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, USA
| | - R. M. Candey
- NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - R. C. Johnson
- ADNET Systems Inc., NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - T. Kovalick
- ADNET Systems Inc., NASA Goddard Space Flight Center, Greenbelt, MD USA
| | - M. H. Liu
- ADNET Systems Inc., NASA Goddard Space Flight Center, Greenbelt, MD USA
| | | | - A. Breneman
- University of Minnesota, Minneapolis, MN USA
| | - K. Kersten
- University of Minnesota, Minneapolis, MN USA
| | - P. Schroeder
- Space Sciences Laboratory, University of California, Berkeley, USA
| |
Collapse
|
13
|
Maekawa T, Osawa Y, Izumi T, Nagao S, Takano K, Okada Y, Tachi N, Teramoto M, Kawamura T, Horiuchi T, Saga R, Kato S, Yamamura T, Watanabe J, Kobayashi A, Kobayashi S, Sato K, Hashimoto M, Suzu S, Kimura F. Correction: Myeloproliferative leukemia protein activation directly induces fibrocyte differentiation to cause myelofibrosis. Leukemia 2018; 32:2729-2730. [PMID: 30232464 DOI: 10.1038/s41375-018-0237-3] [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: 11/09/2022]
Abstract
Owing to the insufficient specificity of the anti-myeloproliferative leukemia protein (MPL) antibody in the original version of this Article, Figure 6 and parts of Figures 2a, 4e, and 5a do not represent the correct information. The corrected version of Figure 6 is in this correction and those of Figures 2a, 4e, and 5a are shown in the supplemental information.
Collapse
Affiliation(s)
- T Maekawa
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan.
| | - Y Osawa
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - T Izumi
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - S Nagao
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - K Takano
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Y Okada
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - N Tachi
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - M Teramoto
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - T Kawamura
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - T Horiuchi
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - R Saga
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - S Kato
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - T Yamamura
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - J Watanabe
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - A Kobayashi
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - S Kobayashi
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - K Sato
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - M Hashimoto
- Suzu Project Laboratory, Center for AIDS Research, Kumamoto University, Kumamoto, Japan
| | - S Suzu
- Suzu Project Laboratory, Center for AIDS Research, Kumamoto University, Kumamoto, Japan
| | - F Kimura
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| |
Collapse
|
14
|
Teramoto M, Kudome-Takamatsu T, Nishimura O, An Y, Kashima M, Shibata N, Agata K. Molecular markers for X-ray-insensitive differentiated cells in the Inner and outer regions of the mesenchymal space in planarian Dugesia japonica. Dev Growth Differ 2016; 58:609-19. [PMID: 27530596 DOI: 10.1111/dgd.12309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 05/02/2016] [Revised: 05/24/2016] [Accepted: 06/05/2016] [Indexed: 12/01/2022]
Abstract
Planarian's strong regenerative ability is dependent on stem cells (called neoblasts) that are X-ray-sensitive and proliferative stem cells. In addition to neoblasts, another type of X-ray-sensitive cells was newly identified by recent research. Thus, planarian's X-ray-sensitive cells can be divided into at least two populations, Type 1 and Type 2, the latter corresponding to planarian's classically defined "neoblasts". Here, we show that Type 1 cells were distributed in the outer region (OR) immediately underneath the muscle layer at all axial levels from head to tail, while the Type 2 cells were distributed in a more internal region (IR) of the mesenchymal space at the axial levels from neck to tail. To elucidate the biological significance of these two regions, we searched for genes expressed in differentiated cells that were locate close to these X-ray-sensitive cell populations in the mesenchymal space, and identified six genes mainly expressed in the OR or IR, named OR1, OR2, OR3, IR1, IR2 and IR3. The predicted amino acid sequences of these genes suggested that differentiated cells expressing OR1, OR3, IR1, or IR2 provide Type 1 and Type 2 cells with specific extracellular matrix (ECM) environments.
Collapse
Affiliation(s)
- Machiko Teramoto
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
| | | | - Osamu Nishimura
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.,Global COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kyoto, Japan.,Center for Life Science Technologies, RIKEN, Kobe, Hyogo, Japan
| | - Yang An
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.,Immolife-biotech Co. Ltd., Nanking, China
| | - Makoto Kashima
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Norito Shibata
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.,Department of Integrated Science and Technology, National Institute of Technology, Tsuyama College 624-1, Tsuyama-City, Okayama, Japan
| | - Kiyokazu Agata
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan. .,Center for Developmental Biology, RIKEN, Kobe, Hyogo, Japan. .,Global COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kyoto, Japan.
| |
Collapse
|
15
|
Fujisawa M, Udono T, Nogami E, Hirosawa M, Morimura N, Saito A, Seres M, Teramoto M, Nagano K, Mori Y, Uesaka H, Nasu K, Tomonaga M, Idani G, Hirata S, Tsuruyama T, Matsubayashi K. A case of maxillary sarcoma in a chimpanzee (Pan troglodytes
). J Med Primatol 2013; 43:111-4. [DOI: 10.1111/jmp.12086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2013] [Indexed: 11/28/2022]
Affiliation(s)
- M. Fujisawa
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
- Center for Southeast Asian Studies; Kyoto University; Kyoto Japan
| | - T. Udono
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - E. Nogami
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - M. Hirosawa
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - N. Morimura
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - A. Saito
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - M. Seres
- Primate Research Institute; Kyoto University; Inuyama Japan
| | - M. Teramoto
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - K. Nagano
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - Y. Mori
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - H. Uesaka
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - K. Nasu
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - M. Tomonaga
- Primate Research Institute; Kyoto University; Inuyama Japan
| | - G. Idani
- Kumamoto Sanctuary; Wildlife Research Center; Kyoto University; Uki Japan
| | - S. Hirata
- Primate Research Institute; Kyoto University; Inuyama Japan
| | - T. Tsuruyama
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - K. Matsubayashi
- Center for Southeast Asian Studies; Kyoto University; Kyoto Japan
| |
Collapse
|
16
|
Alonso-Gutiérrez J, Teramoto M, Yamazoe A, Harayama S, Figueras A, Novoa B. Alkane-degrading properties of Dietzia sp. H0B, a key player in the Prestige oil spill biodegradation (NW Spain). J Appl Microbiol 2011; 111:800-10. [PMID: 21767337 DOI: 10.1111/j.1365-2672.2011.05104.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Investigation of the alkane-degrading properties of Dietzia sp. H0B, one of the isolated Corynebacterineae strains that became dominant after the Prestige oil spill. METHODS AND RESULTS Using molecular and chemical analyses, the alkane-degrading properties of strain Dietzia sp. H0B were analysed. This Grampositive isolate was able to grow on n-alkanes ranging from C₁₂ to C₃₈ and branched alkanes (pristane and phytane). 8-Hexadecene was detected as an intermediate of hexadecane degradation by Dietzia H0B, suggesting a novel alkane-degrading pathway in this strain. Three putative alkane hydroxylase genes (one alkB homologue and two CYP153 gene homologues of cytochrome P450 family) were PCR-amplified from Dietzia H0B and differed from previously known hydroxylase genes, which might be related to the novel degrading activity observed on Dietzia H0B. The alkane degradation activity and the alkB and CYP153 gene expression were observed constitutively regardless of the presence of the substrate, suggesting additional, novel pathways for alkane degradation. CONCLUSIONS The results from this study suggest novel alkane-degrading pathways in Dietzia H0B and a genetic background coding for two different putative oil-degrading enzymes, which is mostly unexplored and worth to be subject of further functional analysis. SIGNIFICANCE AND IMPACT OF THE STUDY This study increases the scarce information available about the genetic background of alkane degradation in genus Dietzia and suggests new pathways and novel expression mechanisms of alkane degradation.
Collapse
|
17
|
Kouguchi Y, Teramoto M, Kuramoto M. Real-time nucleic acid sequence-based amplification (NASBA) using an adenine-induced quenching probe and an intercalator dye. J Appl Microbiol 2010; 109:1724-32. [PMID: 20629802 DOI: 10.1111/j.1365-2672.2010.04801.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS We found that an adenine base caused fluorescence quenching of a fluorescein (FL)-labelled probe in DNA:RNA hybrid sequences, and applied this finding to a nucleic acid sequence-based amplification (NASBA) method. METHODS AND RESULTS The present NASBA method employed a probe containing an FL-modified thymine at its 3' end and ethidium bromide (EtBr) on the basis of a combination of adenine-induced quenching and fluorescence resonance energy transfer (FRET) between the FL donor and EtBr acceptor. This NASBA was used to detect Shiga toxin (STX) stx-specific mRNA in STX-producing Escherichia coli, demonstrating rapid quantification of the target gene with high sensitivity. CONCLUSION Although the inherent quenching effect of adenine was inferior to that of guanine, FRET between the FL and EtBr moieties enhanced the adenine-induced quenching, allowing rapid and sensitive real-time NASBA detection. SIGNIFICANCE AND IMPACT OF THE STUDY This study gives a novel real-time diagnostic system based on NASBA for a sensitive mRNA (or viral RNA) detection.
Collapse
Affiliation(s)
- Y Kouguchi
- Fukuyama City Public Health Center, Fukuyama, Hiroshima, Japan.
| | | | | |
Collapse
|
18
|
Yegani R, Hirozawa H, Teramoto M, Himei H, Okada O, Takigawa T, Ohmura N, Matsumiya N, Matsuyama H. Selective separation of CO2 by using novel facilitated transport membrane at elevated temperatures and pressures. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2007.01.011] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
19
|
Kitawaki J, Ishihara H, Koshiba H, Kiyomizu M, Teramoto M, Kitaoka Y, Honjo H. Usefulness and limits of CA-125 in diagnosis of endometriosis without associated ovarian endometriomas. Hum Reprod 2007. [DOI: 10.1093/humrep/del512] [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: 11/13/2022] Open
|
20
|
Furumoto T, Teramoto M, Inada N, Ito M, Nishida I, Watanabe A. Phosphorylation of a bifunctional enzyme, 6-phosphofructo-2-kinase/fructose-2,6-bisphosphate 2-phosphatase, is regulated physiologically and developmentally in rosette leaves of Arabidopsis thaliana. Plant Cell Physiol 2001; 42:1044-1048. [PMID: 11673618 DOI: 10.1093/pcp/pce161] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The phosphorylation status of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphate 2-phosphatase (EC 2.7.1.105/ EC 3.1.3.46) in rosette leaves of Arabidopsis was examined. Immunoblotting with specific antisera detected 96-kDa and 92-kDa bands in the crude protein extracts from rosette leaves of Arabidopsis. Incubation of protein samples with alkaline phosphatase before SDS-PAGE reduced the 96-kDa band with concomitant increase of the 92-kDa band, suggesting that the former is a phosphorylated form of the latter. In accordance with this result, 96-kDa and 92-kDa bands were immuno-precipitated from the crude protein extracts from [(32)P]orthophosphate-labeled rosettes of Arabidopsis; and, the former was heavily labeled, the latter faintly labeled. Analysis of phospho-amino acid residues derived from the [(32)P]-labeled 96-kDa band revealed that the phosphorylation occurred on serine and threonine residues, excluding the possibility that the phosphorylated band represent a phospho-histidine intermediate that is known to form in the phosphatase reaction. The relative level of the 96-kDa band over the 92-kDa band in whole rosette extracts changed diurnally and was highest at the beginning of nighttime. Furthermore, the 96-kDa band was highly enriched in the extracts of very young rosette leaves, suggesting that the phosphorylation status of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphate 2-phosphatase is regulated physiologically and developmentally in Arabidopsis.
Collapse
Affiliation(s)
- T Furumoto
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan.
| | | | | | | | | | | |
Collapse
|
21
|
Abstract
We identified an open reading frame, designated phcS, downstream of the transcriptional activator gene (phcR) for the expression of multicomponent phenol hydroxylase (mPH) in Comamonas testosteroni R5. The deduced product of phcS was homologous to AphS of C. testosteroni TA441, which belongs to the GntR family of transcriptional regulators. The transformation of Pseudomonas aeruginosa PAO1c (phenol negative, catechol positive) with pROR502 containing phcR and the mPH genes conferred the ability to grow on phenol, while transformation with pROR504 containing phcS, phcR, and mPH genes did not confer this ability. The disruption of phcS in strain R5 had no effect on its phenol-oxygenating activity in a chemostat culture with phenol. The phenol-oxygenating activity was not expressed in strain R5 grown in a chemostat with acetate. In contrast, the phenol-oxygenating activity in the strain with a knockout phcS gene when grown in a chemostat with acetate as the limiting growth factor was 66% of that obtained in phenol-grown cells of the strain with a knockout in the phcS gene. The disruption of phcS and/or phcR and the complementation in trans of these defects confirm that PhcS is a trans-acting repressor and that the unfavorable expression of mPH in the phcS knockout cells grown on acetate requires PhcR. These results show that the PhcS protein repressed the gratuitous expression of phenol-metabolizing enzymes in the absence of the genuine substrate and that strain R5 acted by an unknown mechanism in which the PhcS-mediated repression was overcome in the presence of the pathway substrate.
Collapse
Affiliation(s)
- M Teramoto
- Marine Biotechnology Institute, Kamaishi Laboratories, Kamaishi City, Iwate 026-0001, Japan
| | | | | |
Collapse
|
22
|
Shen M, Kawamoto T, Teramoto M, Makihira S, Fujimoto K, Yan W, Noshiro M, Kato Y. Induction of basic helix-loop-helix protein DEC1 (BHLHB2)/Stra13/Sharp2 in response to the cyclic adenosine monophosphate pathway. Eur J Cell Biol 2001; 80:329-34. [PMID: 11432722 DOI: 10.1078/0171-9335-00167] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 11/18/2022] Open
Abstract
DEC1 (BHLHB2)/Stra13/Sharp2, a basic helix-loop-helix (bHLH) transcription factor has been suggested to be involved in the control of proliferation and/or differentiation of several cells including nerve cells, fibroblasts and chondrocytes. In the present study, we examined the effect of parathyroid hormone (PTH), dibutyryl cAMP (Bt2cAMP) and forskolin on the expression of DEC1 in various cells. In rabbit chondrocyte cultures, PTH or Bt2cAMP increased the DEC1 mRNA level within 1 h. Thereafter, the DEC1 mRNA level rapidly decreased to the basal level at 3 h, and increased at 6-24 h. In cultures of a mouse embryo prechondrogenic cell line ATDC5, PTH or forskolin, an activator of adenylate cyclase, also increased the DEC1 mRNA level within 1 h. Furthermore, in all evaluated cell lines of human fibroblasts, canine epithelial cells, human carcinoma, human glioblastoma and human melanoma, Bt2cAMP increased the DEC1 mRNA level within 1-3 h. Studies with actinomycin D and cycloheximide indicated that the enhancement of DEC1 mRNA by cAMP was not due to mRNA stabilization and did not require new protein synthesis. These findings suggest that DEC1 is a novel direct target for cAMP in wide types of cells, and that the bHLH protein is involved in the control of gene expression in cAMP-activated cells.
Collapse
Affiliation(s)
- M Shen
- Department of Biochemistry, Hiroshima University Faculty of Dentistry, Japan
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Teramoto M, Nakamasu K, Noshiro M, Matsuda Y, Gotoh O, Shen M, Tsutsumi S, Kawamoto T, Iwamoto Y, Kato Y. Gene structure and chromosomal location of a human bHLH transcriptional factor DEC1 x Stra13 x SHARP-2/BHLHB2. J Biochem 2001; 129:391-6. [PMID: 11226878 DOI: 10.1093/oxfordjournals.jbchem.a002869] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 11/12/2022] Open
Abstract
DEC1/BHLHB2 is a novel cAMP-inducible basic helix-loop-helix (bHLH) transcriptional factor isolated from human chondrocyte cultures by the subtraction method [Shen et al. (1997) Biochem. Biophys. Res. Commun. 236, 294--298]. DEC1 seems to be involved in controlling the proliferation/differentiation of some cell lineages. We determined the structure of the human DEC1 gene and its chromosomal locus. Phylogenetic analysis and comparison of the gene structure showed that the DEC1 protein is a member of a new subgroup of the proline bHLH protein family that diverged earlier than other proline bHLH proteins including HES, hairy and E(spl). The human DEC1 gene spans approximately 5.7 kb and contains 5 exons. The putative promoter region contains multiple GC boxes but no TATA box. A primer extension study showed multiple transcriptional initiation sites. In the 5'-flanking region of the DEC1 gene, several transcriptional factor binding sites, including a cAMP-responsive element (CRE), were found using the transcription factor database. The DEC1 gene locates at Chromosome 3p25.3--26 by the FISH method. This is the first study to determine the genomic structure of the DEC1 gene subgroup.
Collapse
Affiliation(s)
- M Teramoto
- Department of Biochemistry, Hiroshima University School of Dentistry, Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Sakagami-Yoshida N, Teramoto M, Hioki A, Fuyuhiro A, Kaizaki S. Anomalous stereochemistry of pyrazolato-3,5-dicarboxylato-bridged dinuclear chromate(III) complexes containing ethylenediamine-N,N'-dicarboxylates with entrapped unstable conformations: X-ray structure of Na[Cr2(eddp)(mu-pzdc)].6H2O. Inorg Chem 2000; 39:5717-24. [PMID: 11153506 DOI: 10.1021/ic000361f] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several new pyrazolato-3,5-dicarboxylato (pzdc) bridged dinuclear chromate(III) complexes containing linear tetradentate O-N-N-O type ligands were synthesized and structurally characterized. Among them, the X-ray structure of the eddp complex Na[Cr2(eddp)(mu-pzdc)].6H2O (eddp = ethylenediamine-N,N'-dipropionate) was determined to have a (sym-cis)-(unsym-cis) geometrical configuration with intramolecular three-center hydrogen bonds, entrapping the unfavored sym-cis configuration for the Cr(eddp) moiety as well as the favored unsym-cis one. As a pair of positional disorders, there were also found to be two conformational isomers with respect to the absolute configurations of the coordinated asymmetric nitrogen atom at the G (in-plane) ring for the unsym-cis moiety. Moreover, chiral pzdc-bridged dinuclear complexes with another type of O-N-N-O ligand, 1,2-cyclohexanediamine-N,N'-diacetate (cdda), were successfully synthesized, isolated, and characterized by column chromatographic behavior, elemental analysis, and chiroptical spectra. There were two diastereomers for Na[(R,R-cdda)Cr(mu-pzdc)Cr(S,S-cdda)] and only one isomer for Na[(R,R-cdda)Cr(mu-pzdc)Cr(R,S-cdda)] and Na[(R,R-cdda)Cr(mu-pzdc)Cr(edda)] (R,R- or S,S- and R,S-cdda = R,R-trans- or S,S-trans- and R,S-cis-1,2-cyclohexanediamine-N,N'-diacetate, and edda = ethylenediamine-N,N'-diacetate). From their circular dichroism (CD) spectra, these complexes could exhibit the delta-delta absolute configuration with ((sym-cis-R,R-cdda)-(unsym-cis-edda or S,S- or R,S-cdda)) geometrical configuration, indicating the abnormal eq-eq (N-Ceq) configuration for the R,R-cdda. The comparison among the CD spectra of the ((cdda)-(cdda)) complexes revealed that two diastereomers of the ((R,R-cdda)-(S,S-cdda)) complex correspond to the conformational isomers resulting from the difference in geometrical orientations of the secondary amine protons on two coordinated asymmetric nitrogen atoms with the opposite absolute configuration in the unsym-cis-S,S-cdda moiety. In a series of the pzdc-bridged Cr(III) complexes the anomalous conformations in two different geometrical configurations could be entrapped probably owing to stereognostic coordination through the intramolecular N-H...O hydrogen bond interaction.
Collapse
Affiliation(s)
- N Sakagami-Yoshida
- Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | | | | | | | | |
Collapse
|
25
|
Abstract
A seven fold increase in the rate of respiratory O2 uptake was observed 24 h after slicing of potato tuber disks. The maximum activity of pyrophosphate:fructose-6-phosphate phosphotransferase (PFP) was 5-7 times greater than that of ATP-dependent phosphofructokinase (PFK) in fresh or aged potato slices. Thus, PFP may participate in glycolysis which supplies respiratory substrate in potato tubers. The PFP activity of desalted extracts determined in the absence of fructose-2,6-bisphosphate (F2,6BP) increased by 4.5 fold 24 h after slicing. However, maximal PFP activity determined with saturating (1 microM) F2,6BP was not changed. The Ka values of PFP for F2,6BP was lowered from 33 to 7 nM after 24 h of aging treatment. This increased susceptibility of the PFP activity to its allosteric activator, F2,6BP, may be involved in the increased respiration in wounded disks of potato tubers. Immunoblotting experiments indicated that both the alpha (66 kDa) and the beta (60 kDa) subunits of PFP were present in fresh or 24 h aged tuber slices.
Collapse
Affiliation(s)
- M Teramoto
- Department of Biology, Faculty of Science, Ochanomizu University, Tokyo, Japan
| | | | | |
Collapse
|
26
|
Nakamasu K, Kawamoto T, Shen M, Gotoh O, Teramoto M, Noshiro M, Kato Y. Membrane-bound transferrin-like protein (MTf): structure, evolution and selective expression during chondrogenic differentiation of mouse embryonic cells. Biochim Biophys Acta 1999; 1447:258-64. [PMID: 10542324 DOI: 10.1016/s0167-4781(99)00173-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mouse membrane-bound transferrin-like protein (MTf) cDNA was cloned to examine its expression during chondrogenic differentiation in the mouse embryonic cell line ATDC5, and to analyze the phylogenetic relationships among the MTfs of four animal species and 23 other transferrin members. Phylogenetic analysis indicated that the MTf gene diverged from the common ancestor gene earlier than the genes of the other transferrins such as serum transferrin, lactoferrin and ovotransferrin, and that the divergence occurred after the divergence of vertebrates and invertebrates. MTf, as well as the other transferrins, consists of two repeated domains. The similarity between the N-terminal and the C-terminal domains of MTf is much higher than that of the other transferrins, although the five amino acid residues required for iron binding were not conserved in the C-terminal domain of MTf in contrast to the conservation of these residues in both domains of the other transferrins. Among various adult mouse tissues, MTf mRNA was expressed at the highest level in cartilage and at a moderate level in the testis. MTf mRNA was expressed only at very low levels in the brain, spleen, thymus, muscle, lung, skin and intestine, and hardly detected in the heart, kidney, stomach and liver. In cultures of the mouse ATDC5 cell line, MTf is developmentally expressed in parallel with the expression of type II collagen and aggrecan, in the pattern commensurate with the onset of chondrogenesis to form cartilage nodules. The structural characteristics and the expression pattern suggest that during development and in adult tissues, MTf has some functions that are different from those of other transferrins.
Collapse
Affiliation(s)
- K Nakamasu
- Department of Biochemistry, Hiroshima University School of Dentistry, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | | | | | | | | | | | | |
Collapse
|
27
|
Teramoto M, Futamata H, Harayama S, Watanabe K. Characterization of a high-affinity phenol hydroxylase from Comamonas testosteroni R5 by gene cloning, and expression in Pseudomonas aeruginosa PAO1c. Mol Gen Genet 1999; 262:552-8. [PMID: 10589844 DOI: 10.1007/s004380051117] [Citation(s) in RCA: 33] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Comamonas testosteroni strain R5 is a phenol-degrading bacterium which expresses a phenol-oxygenating activity that is characterized by low Ks (the apparent half-saturation constant in Haldane's equation) and low K(SI) (the apparent inhibition constant) values. We have now cloned the gene cluster encoding a phenol hydroxylase (phcKLMNOP) and its cognate regulator (phcR) from strain R5. Transformation of Pseudomonas aeruginosa PAO1c (Phenol Catechol+) with pROR502, a derivative of pRO1614 containing the cloned genes, confers the ability to grow on phenol as the sole carbon source. The Ks and K(SI) values for the phenol-oxygenating activity of PAO1c(pROR502) are almost identical to those of strain R5, suggesting that the phcKLMNOP genes encode the major phenol hydroxylase in strain R5. A phylogenetic analysis shows the phenol hydroxylase from strain R5 to be more closely related to toluene/benzene-2-monooxygenase (Tb2m) from Pseudomonas sp. JS150 than to the phenol hydroxylases from P. putida CF600 and BH, or to the phenol hydroxylase from Ralstonia eutropha E2. Analysis of the substrate specificity of PAO1c(pROR502) and PAO1c derivatives expressing phenol hydroxylase from P. putida BH or from R. eutropha E2 indicates that these phenol hydroxylases catalyze the oxidation not only of phenol and cresols but also of toluene and benzene.
Collapse
Affiliation(s)
- M Teramoto
- Marine Biotechnology Institute, Kamaishi Laboratories, Kamaishi City, Iwate, Japan.
| | | | | | | |
Collapse
|
28
|
Watanabe K, Teramoto M, Harayama S. An outbreak of nonflocculating catabolic populations caused the breakdown of a phenol-digesting activated-sludge process. Appl Environ Microbiol 1999; 65:2813-9. [PMID: 10388669 PMCID: PMC91422 DOI: 10.1128/aem.65.7.2813-2819.1999] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.4] [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: 11/20/2022] Open
Abstract
Activated sludge was fed phenol as the sole carbon source, and the phenol-loading rate was increased stepwise from 0.5 to 1.0 g liter-1 day-1 and then to 1.5 g liter-1 day-1. After the loading rate was increased to 1.5 g liter-1 day-1, nonflocculating bacteria outgrew the sludge, and the activated-sludge process broke down within 1 week. The bacterial population structure of the activated sludge was analyzed by temperature gradient gel electrophoresis (TGGE) of PCR-amplified 16S ribosomal DNA (rDNA) fragments. We found that the population diversity decreased as the phenol-loading rate increased and that two populations (designated populations R6 and R10) predominated in the sludge during the last several days before breakdown. The R6 population was present under the low-phenol-loading-rate conditions, while the R10 population was present only after the loading rate was increased to 1.5 g liter-1 day-1. A total of 41 bacterial strains with different repetitive extragenic palindromic sequence PCR patterns were isolated from the activated sludge under different phenol-loading conditions, and the 16S rDNA and gyrB fragments of these strains were PCR amplified and sequenced. Some bacterial isolates could be associated with major TGGE bands by comparing the 16S rDNA sequences. All of the bacterial strains affiliated with the R6 population had almost identical 16S rDNA sequences, while the gyrB phylogenetic analysis divided these strains into two physiologically divergent groups; both of these groups of strains could grow on phenol, while one group (designated the R6F group) flocculated in laboratory media and the other group (the R6T group) did not. A competitive PCR analysis in which specific gyrB sequences were used as the primers showed that a population shift from R6F to R6T occurred following the increase in the phenol-loading rate to 1.5 g liter-1 day-1. The R10 population corresponded to nonflocculating phenol-degrading bacteria. Our results suggest that an outbreak of nonflocculating catabolic populations caused the breakdown of the activated-sludge process. This study also demonstrated the usefulness of gyrB-targeted fine population analyses in microbial ecology.
Collapse
MESH Headings
- Bacteria/classification
- Bacteria/genetics
- Bacteria/isolation & purification
- Bacteria/metabolism
- Biodegradation, Environmental
- DNA Gyrase
- DNA Topoisomerases, Type II/genetics
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Ecosystem
- Electrophoresis, Agar Gel/methods
- Molecular Sequence Data
- Phenol/metabolism
- Phylogeny
- Polymerase Chain Reaction/methods
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sewage/microbiology
Collapse
Affiliation(s)
- K Watanabe
- Marine Biotechnology Institute, Kamaishi Laboratories, Heita, Kamaishi City, Iwate, Japan.
| | | | | |
Collapse
|
29
|
Watanabe K, Teramoto M, Futamata H, Harayama S. Molecular detection, isolation, and physiological characterization of functionally dominant phenol-degrading bacteria in activated sludge. Appl Environ Microbiol 1998; 64:4396-402. [PMID: 9797297 PMCID: PMC106659 DOI: 10.1128/aem.64.11.4396-4402.1998] [Citation(s) in RCA: 192] [Impact Index Per Article: 7.4] [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: 11/20/2022] Open
Abstract
DNA was isolated from phenol-digesting activated sludge, and partial fragments of the 16S ribosomal DNA (rDNA) and the gene encoding the largest subunit of multicomponent phenol hydroxylase (LmPH) were amplified by PCR. An analysis of the amplified fragments by temperature gradient gel electrophoresis (TGGE) demonstrated that two major 16S rDNA bands (bands R2 and R3) and two major LmPH gene bands (bands P2 and P3) appeared after the activated sludge became acclimated to phenol. The nucleotide sequences of these major bands were determined. In parallel, bacteria were isolated from the activated sludge by direct plating or by plating after enrichment either in batch cultures or in a chemostat culture. The bacteria isolated were classified into 27 distinct groups by a repetitive extragenic palindromic sequence PCR analysis. The partial nucleotide sequences of 16S rDNAs and LmPH genes of members of these 27 groups were then determined. A comparison of these nucleotide sequences with the sequences of the major TGGE bands indicated that the major bacterial populations, R2 and R3, possessed major LmPH genes P2 and P3, respectively. The dominant populations could be isolated either by direct plating or by chemostat culture enrichment but not by batch culture enrichment. One of the dominant strains (R3) which contained a novel type of LmPH (P3), was closely related to Valivorax paradoxus, and the result of a kinetic analysis of its phenol-oxygenating activity suggested that this strain was the principal phenol digester in the activated sludge.
Collapse
Affiliation(s)
- K Watanabe
- Marine Biotechnology Institute, Kamaishi Laboratories, Heita, Kamaishi City, Iwate, Japan.
| | | | | | | |
Collapse
|
30
|
Nio Y, Sato Y, Nagami H, Teramoto M, Inoue Y, Yano S, Sumi S, Tamura K, Fukumoto M. Neoadjuvant chemotherapy of gastric cancer with oral UFT (a mixture of uracil and fturafur) during the waiting period for surgery. Anticancer Res 1998; 18:523-30. [PMID: 9568172] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Our previous experience has demonstrated that growth of gastric cancer during the waiting period for surgery cannot be neglected, and some patients hope to receive prophylactic treatment to inhibit the growth of tumor until surgery. The present study was designed to assess the clinical benefits of preoperative chemotherapy with oral UFT for gastric cancer during the waiting period for surgery. Fifty patients with gastric cancer (24 early, 25 advanced and 1 recurrent cancers) were treated with oral UFT at 300-600 mg/day for 7-36 days before surgery and the objective responses and the postsurgical survivals were evaluated. In 42 of 50 patients objective responses of primary lesions were assessed by endoscopy or upper gastrointestinal series examination, and 2 CRs, 15 PRs and 25 NCs were seen (40% response). The histological effect was evaluated in 50 patients and the following classifications were made: grade 3 (complete disappearance or necrosis of tumor cells), 2; grade 2 (necrotic changes > 2/3 area), 4; grade 1b (> 1/3 area), 7; grade 1a (< 1/3 area), 15; and grade 0 (no histological changes), 22. A longer period of UFT administration was associated with CR or PR. All the patients underwent gastrectomy (38 curative and 12 palliative gastrectomies): all patients with Stage I-III primary gastric cancer are alive after surgery, and the 50% survival period of the patients with Stage IV cancer was 20 months. The side effects were not serious, including slight myelotoxicity, liver dysfunction and anorexia. It is concluded that preoperative chemotherapy for gastric cancer with oral UFT on outpatient basis may result in down-staging as well as the prevention of tumor growth during the waiting period for surgery without serious side effects.
Collapse
Affiliation(s)
- Y Nio
- First Department of Surgery, Shimane Medical University, Shimane, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Ueta K, Hamada K, Mikasa K, Teramoto M, Sakamoto S, Konishi M, Maeda K, Tsujimoto M, Mori K, Majima T, Sawaki M, Kita E, Narita N. [Evaluation of BRM (biological response modifier) action of clarithromycin (CAM)--effect on cytokine expression in a mouse lung cancer model]. Jpn J Antibiot 1998; 51 Suppl A:57-60. [PMID: 9597487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
32
|
Konishi M, Sawaki M, Mori K, Mikasa K, Maeda K, Imae T, Yamanaka K, Ueta K, Teramoto M, Sakamoto M, Tsujimoto M, Hamada K, Narita N, Kita E, Yoshioka A. [Log-term administration of clarithromycin as a possible adjuvant therapy of HIV infections]. Jpn J Antibiot 1997; 50 Suppl A:137-9. [PMID: 9597467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
33
|
Hamada K, Sakamoto M, Mikasa K, Teramoto M, Mori K, Tsujimoto M, Maeda K, Konishi M, Sawaki M, Narita N, Kita E. [Evaluation of antineoplastic effect of CAM (clarithromycin) in a mouse model inoculated with lung cancer cells]. Jpn J Antibiot 1997; 50 Suppl A:28-31. [PMID: 9597434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
34
|
Teramoto M, Domoto T, Tanigawa K, Yasui Y, Tamura K. Distribution of nitric oxide synthase-containing nerves in the aganglionic intestine of mutant rats: a histochemical study. J Gastroenterol 1996; 31:214-23. [PMID: 8680541 DOI: 10.1007/bf02389520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We examined the distribution of nerves containing nitric oxide synthase in the intestine of congenitally aganglionic rats, using a reduced nicotinamide adenine dinucleotide phosphate diaphorase histochemical method for whole-mount and cryostat specimens. A constricted intestinal segment extends from the terminal ileum to the anus in this mutant. No nerve elements with the activity were found in the affected terminal ileum, cecum and proximal colon. Although intrinsic ganglionic neurons were absent along the constricted intestine, nerve fibers with the activity were found in both the submucous and intermuscular layers distal to the proximal colon. These fibers increased in density towards the rectum, forming hypertrophic nerve bundles and unusual fiber networks. However, positive fibers were never seen within the circular and longitudinal musculature of the constricted lesion. Some of these hypertrophic nerve bundles were continuous with ectopic ganglia that were situated in the adventitial connective tissue around the lower rectum and in the submucosa near the anus. The hypertrophic nerve bundles seemed to have an extrinsic origin; some of them may have originated from ectopic ganglia. These results suggest that the defective distribution of nerves containing nitric oxide synthase may be involved in the pathogenesis of congenital colonic aganglionosis.
Collapse
Affiliation(s)
- M Teramoto
- First Department of Surgery, Shimane Medical University, Izumo, Japan
| | | | | | | | | |
Collapse
|
35
|
Kajita E, Iki M, Tobita Y, Mitamura S, Kusaka Y, Ogata A, Teramoto M, Tsuchida C, Yamamoto K, Ishii Y. [Bone mineral density of the lumbar spine and its relation to biological and lifestyle factors in middle-aged and aged Japanese women (Part 3). Relationships of physical fitness and lifestyle factors to bone mineral density in premenopausal and postmenopausal women]. Nihon Eiseigaku Zasshi 1995; 50:893-900. [PMID: 8538063 DOI: 10.1265/jjh.50.893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [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: 01/31/2023]
Abstract
We recruited community-dwelling women for participation in a study to investigate the effects of risk factors in lifestyle on bone mineral density (BMD). The subjects were 177 women aged 35 years and over living in a rural area in Fukui Prefecture. Their BMD of the lumbar spine (L2-L4) was determined by dual energy X-ray absorptiometry (DXA). In addition to measurements of height, body weight and grip strength, the lifestyles of the women, including physical load in work, sporting activities, smoking habits, calcium intake, and history of bone fracture were interviewed in detail. Adjusted for age, the BMD significantly correlated to body weight (r = 0.337, p < 0.05 for premenopausal women and r = 0.289, p < 0.01 for postmenopausal women) and body mass index (kg/m2) (r = 0.291, p < 0.05 for premenopausal women and r = 0.190, p < 0.05 for postmenopausal women). These results indicated the lower body weight to be a risk factor for the osteoporotic process in middle-aged and aged women. With respect to the grip strength as a physical fitness indicator, a significant correlation coefficient (r = 0.267, p < 0.01) with BMD was obtained for postmenopausal women independent of age and body weight. In univariate analysis, BMD showed no significant correlations with sporting activities, smoking habits, lower back pain and history of bone fracture for either premenopausal women or postmenopausal women.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- E Kajita
- Department of Community and Geriatric Nursing, Toyama Medical and Pharmaceutical University, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Domoto T, Teramoto M, Tanigawa K, Tamura K, Yasui Y. Origins of nerve fibers containing nitric oxide synthase in the rat celiac-superior mesenteric ganglion. Cell Tissue Res 1995; 281:215-21. [PMID: 7544241 DOI: 10.1007/bf00583390] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [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: 01/25/2023]
Abstract
The origin of nitric oxide synthase-containing nerve fibers in rat celiac-superior mesenteric ganglion was examined using retrograde tracing techniques combined with the immunofluorescence method. Fluoro-Gold was injected into the celiac-superior mesenteric ganglion. Neuronal cell bodies retrogradely labeled with Fluoro-Gold in the thoracic spinal cord, the dorsal root ganglia at the thoracic level, the nodose ganglion, and the intestine from the duodenum to the proximal colon were examined for nitric oxide synthase immunoreactivity. About 60% of sympathetic preganglionic neurons in the intermediolateral nucleus projecting to the celiac-superior mesenteric ganglion were immunoreactive for nitric oxide synthase, as were approximately 27% of nodose ganglion neurons and about 65% of dorsal root ganglion neurons projecting to the celiac-superior mesenteric ganglion. Neurons projecting to the celiac-superior mesenteric ganglion were found in the myenteric plexus of the small and large intestine. In the proximal colon, about 23% of such neurons were immunoreactive for nitric oxide synthase. However, in the small intestine, no immunoreactivity was found in these neurons.
Collapse
Affiliation(s)
- T Domoto
- Department of Anatomy, Shimane Medical University, Izumo, Japan
| | | | | | | | | |
Collapse
|
37
|
Nagami H, Tamura K, Kin S, Teramoto M, Ishida T. Beneficial effect of thromboxane A2 synthetase inhibitor (OKY-046) on 24-hr simple hypothermic preservation of the canine pancreas graft. Int Surg 1995; 80:274-7. [PMID: 8775620] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
This study was performed to investigate the potential protective effect of OKY-046, an inhibitor of thromboxane A2 synthetase, on the viability of 24-hr preserved canine segmental pancreas graft. Each graft was preserved in either cold Euro-Collins (E-C) solution (control group; n = 5) or E C+OKY-046(10(-4)M) solution (OKY-046 group; n = 5). In both groups, grafts were preserved for 24 hr and calculated the total levels of 6keto-prostaglandin F1 alpha (6ket-PGF1 alpha) and thromboxane B2(TxB2) in the preservation solution per pancreas graft weight at the time point of 0,3,7,12,24 hr after preservation. The efficacy of OKY-046 in protecting ischemically stressed grafts was examined by histological findings of the grafts before transplantation and blood flow of the transplanted pancreas graft. During 24-hr preservation time, increased production of 6ket-PGF1 alpha and decreased production of TxB2 were found in OKY-046 group. Histologically ischemic damage of the acinar cells was observed in the control group, but it was milder in the OKY-046 group. The blood flow of the transplanted pancreas in the OKY-046 group were higher than that in control group. In the OKY-046 group, all dogs survived with functioning grafts, although some grafts were lost in the control group. These results suggest that there is a possibility that OKY-046 may contribute to the improvement of the survival rate in segmental pancreas transplantation.
Collapse
Affiliation(s)
- H Nagami
- First Department of Surgery, Shimane Medical University, Izumo, Japan
| | | | | | | | | |
Collapse
|
38
|
Tanaka N, Ohtsuka S, Honda S, Matsuyama M, Teramoto M, Ueno K, Inoue M, Morita J, Morita M, Omata K. [Multiparametric cytometric analysis of hepatocellular carcinoma and its allied lesions combining DNA ploidy analysis with morphometry using DAPI/HP double staining]. Gan To Kagaku Ryoho 1995; 22 Suppl 2:197-204. [PMID: 7541978] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hepatocellular carcinomas (HCC) of various differentiation, Edmondson (Edm) grade I-IV, often based upon viral infectious hepatitis transformed through regeneration, nodular and/or dysplastic adenomatous hyperplasia. Aspiration cytology, even needle biopsy for such lesions, is very difficult to interpret. We have been studying multiparametric cytologic analysis using DAPI/Hematoporphyrin (HP) staining for the cece samples provided from exactly trimmed 50-microns thick paraffin sections, employing a new software program which we developed, combining DNA ploidy and cell protein content analysis with morphometry. DAPI indicates DNA content and nuclear size and HP indicates cell protein content and cell size. From 21 cases of HCC, 43 nodules or masses including multiple lesions and nodule in nodule were analyzed. Surrounding non-neoplastic hepatic tissues were examined as the control specimens. On DNA histogram, cases with the peak over 2.4 c are identified as aneuploid (Aneupl). Cases of Edm I, or II, 6 of 8 samples showed Aneupl., all of 11 cases of Edm II, 11 cases of Edm III, and one of Edm IV showed Aneupl. Multinodular foci in the same cases and also nodule in nodule often showed different modes of Aneupl. This suggested heterogenetic carcinogeneity. Noncarcinomatous foci often showed Aneupl. modes, which may indicate malignant transformation or malignant potential.
Collapse
Affiliation(s)
- N Tanaka
- Dept. of Pathology, Saitama Medical College
| | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Nakamura S, Tanigawa K, Kawaguchi M, Inoue Y, Xu G, Nagami H, Teramoto M, Kato Y, Tamura K. Effect of chronic vanadate administration in partially depancreatized rats. Diabetes Res Clin Pract 1995; 27:51-9. [PMID: 7781494 DOI: 10.1016/0168-8227(94)01012-o] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The effects of vanadate on B-cell function and replication in rats after 90% partial pancreatectomy (Px) were compared with insulin therapy. At the age of 4 weeks, male Wistar rats were subjected to sham operation or Px. Vanadate (0.2 mg/ml) was given in drinking water for 3 weeks starting at 2 weeks after surgery. Regular insulin (2.4 units/day) was administered as a continuous subcutaneous infusion through an osmotic pump. Plasma glucose levels were significantly higher in the Px rats than in the sham rats from 1 week after surgery. Vanadate lowered plasma glucose levels to near normal values in the Px rats as early as 2 days. The effect was sustained throughout the experiment. The hypoglycemic effect of insulin was less than that of vanadate. During an i.p. glucose tolerance test, plasma glucose levels were decreased in the Px rats treated with vanadate or insulin, while plasma insulin levels were not affected. The insulin content in the Px rats treated with vanadate was significantly (P < 0.01) greater than in the insulin-treated Px rats. Histological examination showed fibrotic degeneration in the enlarged islets of Px rats, whereas the normal structure was retained in most islets of the Px rats treated with vanadate and insulin. In addition, B-cell areas within the islet were restored to normal levels not only in the insulin-treated Px rats but in the vanadate-treated Px rats. However, both vanadate and insulin failed to stimulate proliferative activity of the B-cells. These data suggest that vanadate is a new therapeutic option to ameliorate the diabetic state after Px.
Collapse
Affiliation(s)
- S Nakamura
- First Department of Surgery, Shimane Medical University, Izumo, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Abstract
Nerve terminals immunoreactive for nitric oxide synthase (NOS) were studied in the rat coeliac-superior mesenteric ganglion by electron microscopy using a pre-embedding immunostaining method. The immunoreactive material was distributed in the axoplasmic matrix and was not specifically associated with any subcellular organelle. In most NOS-immunoreactive axon terminals numerous small clear vesicles (35-50 nm) were seen, and in some terminals a small number of large granular vesicles (70-120 nm) were intermingled with small clear vesicles. Most NOS-immunoreactive axon terminals formed axodendritic as well as axo-somatic synapses with non-immunoreactive ganglion neurones, and axo-axonic contacts were very scarce. These results suggest that NO may be released at the synaptic sites from the axon terminals and may affect ganglion neurones.
Collapse
Affiliation(s)
- T Domoto
- Department of Anatomy, Shimane Medical University, Izumo, Japan
| | | | | | | |
Collapse
|
41
|
Teramoto M. [Hopes and joys of a nurse. My viewpoint on nursing education]. Servir 1994; 42:273-8. [PMID: 7732391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
42
|
Tanaka N, Ohtsuka S, Matsuyama M, Teramoto M, Ueno K, Inoue M, Honda S, Morita J, Morita M, Omata K. [UV-microspectrophotometric and flow cytometric analysis of the same samples using DAPI/HP staining]. Gan To Kagaku Ryoho 1993; 20:731-6. [PMID: 7683863] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A simple one-step double staining with DAPI and hematoporphyrin (HP) was used for UV-microspectrophotometric (UV-MSPM) and flow cytometry (FCM) analysis of the same samples. The specimens analyzed included fresh biopsy and/or surgical materials, trimmed 50 microns-thick paraffin sections and smears (with the latter not available for FCM). We provided the special technology for preserving the cytoplasm as far as possible to permit measurement of cell size and N/C ratio. DAPI indicates DNA content under 365 nm and HP of total protein content under 670 nm UV-MSPM. The DAPI can measure the nuclear size and the latter the cell size. DAPI/HP staining yielded much more accurate measurements than staining with FITC and PI. The use of both MSPM and FCM with cell sorting on the same samples is very helpful in cytology and histopathology for evaluating and differentiating borderline lesions and grade of malignancy, as well as oncostatic effectivity. Our goal is to combine this technology with the automated cytologic screening system CYBEST, which was developed by Tanaka et al, based on a morphometric device.
Collapse
Affiliation(s)
- N Tanaka
- Biomedical Laboratory, Yamanashi Hospital of Social Insurance
| | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Tamura K, Kin S, Ono K, Nagami H, Teramoto M, Tarumi T, Nakase A. [Operative results in cancer of the pancreas, especially complicated with large vascular involvement]. Nihon Geka Gakkai Zasshi 1989; 90:1032-42. [PMID: 2796971] [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: 01/02/2023]
Abstract
Surgical treatment has been performed in 25 cases of cancer of the pancreas. Localized large vascular involvements of portal vein, celiac axis, common hepatic artery and/or superior mesenteric artery by the pancreatic cancer were observed in 11 cases, which necessitated total or subtotal pancreatectomy associated with segmental resection of the vessels with vascular reconstruction in 7 cases but in remaining 4 cases resectional procedure was not performed. Curative pancreaticoduodenectomy was carried out in 5 cases without large vascular involvement and non-curative pancreatectomy in one case. Exploratory laparotomy or only anastomosis for the bile duct or the intestine was done in 8 cases. The operative resectability rate was 52% and the curative one was 44%. The regional pancreatectomy seemed to contribute to improvement of resectability. However, one year survival rate was only 42% (2 year, 0%) in the curatively resected cases with large vascular involvement, while 5 year survival rate was 67% in those without vascular involvement. The quality of life after extended total pancreatectomy was distressful. On the other hand, two extended totally pancreatectomized cases with successful autotransplantation of distal pancreas are living at one year and 3 months after operation respectively, and enjoying the common social life at present.
Collapse
Affiliation(s)
- K Tamura
- First Department of Surgery, Shimane Medical University, Izumo, Japan
| | | | | | | | | | | | | |
Collapse
|
44
|
Kin S, Tamura K, Nagami H, Teramoto M, Nakase A. The effect of a distal splenic arteriovenous fistula on tissue blood flow in the pancreatic segment. Transplant Proc 1989; 21:2812-4. [PMID: 2650373] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- S Kin
- First Department of Surgery, Shimane Medical University, Izumo, Japan
| | | | | | | | | |
Collapse
|
45
|
Teramoto M. [Interview with senior nurses: Ms. Matsuno Teramoto, chief nurse at St. Luke's Hospital. Interview by M. Niikura]. Kangogaku Zasshi 1988; 52:27-34. [PMID: 3373816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
46
|
Abstract
The effect of the nephrotoxic antineoplastic drug, cisplatin, on mitochondrial calcium uptake was examined in rat kidney cortical mitochondria. We treated rats with cisplatin (5 mg/kg, i.p.), and prepared and incubated the mitochondria. Uptake of calcium decreased after 24 h. The mitochondria contained platinum even 3 days after injection. Cisplatin (0.5 mM) added to incubation medium inhibited calcium uptake. Platinum accumulated in the mitochondria during incubation. Mitochondria accumulated less of another divalent cation, magnesium, in rats given cisplatin and in incubation medium with cisplatin added. The results suggest that cisplatin taken up into kidney cortical mitochondria inhibited divalent cation uptake there, which may contribute to cisplatin nephrotoxicity.
Collapse
Affiliation(s)
- M Gemba
- Division of Pharmacology, Osaka University of Pharmaceutical Sciences, Japan
| | | | | | | |
Collapse
|
47
|
Tsunoda K, Takane I, Teramoto M. [Studies on cyclic variations of human plasma testosterone levels (Part 1). Daily changes in a month]. Nihon Hoigaku Zasshi 1986; 40:12-9. [PMID: 3773304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
48
|
Teramoto M. [Nurses are there to help the dying patient. 12]. Kango 1984; 36:65-71. [PMID: 6566863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
49
|
Teramoto M. [Nurses are there to help the dying patient. 11]. Kango 1984; 36:97-103. [PMID: 6566850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
50
|
Teramoto M. [Nurses are there to help the dying patients. 10. Part 2: my experience in nursing]. Kango 1984; 36:97-102. [PMID: 6563293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|