1
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Tezuka D, Cho H, Onodera H, Linghu Q, Chijimatsu T, Hata M, Imai R. Redirecting barley breeding for grass production through genome editing of Photoperiod-H1. Plant Physiol 2024; 195:287-290. [PMID: 38366881 PMCID: PMC11060677 DOI: 10.1093/plphys/kiae075] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/02/2024] [Accepted: 01/15/2024] [Indexed: 02/18/2024]
Abstract
Genome editing enables precise modification to harness an elite grain-producing barley (Hordeum vulgare L.) cultivar for grass production.
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Affiliation(s)
- Daisuke Tezuka
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
| | - Huikyong Cho
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
| | - Hitomi Onodera
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
| | - Qianyan Linghu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
| | | | | | - Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan
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2
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Ota T, Saburi W, Tagami T, Yu J, Komba S, Jewell LE, Hsiang T, Imai R, Yao M, Mori H. Molecular mechanism for endo-type action of glycoside hydrolase family 55 endo-β-1,3-glucanase on β1-3/1-6-glucan. J Biol Chem 2023; 299:105294. [PMID: 37774972 PMCID: PMC10637969 DOI: 10.1016/j.jbc.2023.105294] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/01/2023] Open
Abstract
The glycoside hydrolase family 55 (GH55) includes inverting exo-β-1,3-glucosidases and endo-β-1,3-glucanases, acting on laminarin, which is a β1-3/1-6-glucan consisting of a β1-3/1-6-linked main chain and β1-6-linked branches. Despite their different modes of action toward laminarin, endo-β-1,3-glucanases share with exo-β-1,3-glucosidases conserved residues that form the dead-end structure of subsite -1. Here, we investigated the mechanism of endo-type action on laminarin by GH55 endo-β-1,3-glucanase MnLam55A, identified from Microdochium nivale. MnLam55A, like other endo-β-1,3-glucanases, degraded internal β-d-glucosidic linkages of laminarin, producing more reducing sugars than the sum of d-glucose and gentiooligosaccharides detected. β1-3-Glucans lacking β1-6-linkages in the main chain were not hydrolyzed. NMR analysis of the initial degradation of laminarin revealed that MnLam55A preferentially cleaved the nonreducing terminal β1-3-linkage of the laminarioligosaccharide moiety at the reducing end side of the main chain β1-6-linkage. MnLam55A liberates d-glucose from laminaritriose and longer laminarioligosaccharides, but kcat/Km values to laminarioligosaccharides (≤4.21 s-1 mM-1) were much lower than to laminarin (5920 s-1 mM-1). These results indicate that β-glucan binding to the minus subsites of MnLam55A, including exclusive binding of the gentiobiosyl moiety to subsites -1 and -2, is required for high hydrolytic activity. A crystal structure of MnLam55A, determined at 2.4 Å resolution, showed that MnLam55A adopts an overall structure and catalytic site similar to those of exo-β-1,3-glucosidases. However, MnLam55A possesses an extended substrate-binding cleft that is expected to form the minus subsites. Sequence comparison suggested that other endo-type enzymes share the extended cleft. The specific hydrolysis of internal linkages in laminarin is presumably common to GH55 endo-β-1,3-glucanases.
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Affiliation(s)
- Tomoya Ota
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Takayoshi Tagami
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Jian Yu
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Shiro Komba
- Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba, Japan
| | - Linda Elizabeth Jewell
- St. John's Research and Development Center, Agriculture and Agri-Food Canada, St John's, Newfoundland and Labrador, Canada
| | - Tom Hsiang
- School of Environmental Sciences, University of Guelph, Guelph, Canada
| | - Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
| | - Min Yao
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan.
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3
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Ota T, Saburi W, Jewell LE, Hsiang T, Imai R, Mori H. Identification and characterization of extracellular GH3 β-glucosidase from the pink snow mold fungus, Microdochium nivale. Biosci Biotechnol Biochem 2023:7117957. [PMID: 37055368 DOI: 10.1093/bbb/zbad044] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Glycoside hydrolase family 3 (GH3) β-glucosidase exists in many filamentous fungi. In phytopathogenic fungi, it is involved in fungal growth and pathogenicity. Microdochium nivale is a severe phytopathogenic fungus of grasses and cereals and is the causal agent of pink snow mold, but its β-glucosidase has not been identified. In this study, a GH3 β-glucosidase of M. nivale (MnBG3A) was identified and characterized. Among various p-nitrophenyl β-glycosides, MnBG3A showed activity on d-glucoside (pNP-Glc) and slight activity on d-xyloside. In the pNP-Glc hydrolysis, substrate inhibition occurred (Kis = 1.6 mM), and d-glucose caused competitive inhibition (Ki = 0.5 mM). MnBG3A acted on β-glucobioses with β1-3, -6, -4, and -2 linkages, in descending order of kcat/Km. In contrast, the regioselectivity for newly formed products was limited to β1-6 linkage. MnBG3A has similar features to those of β-glucosidases from Aspergillus spp., but higher sensitivity to inhibitory effects.
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Affiliation(s)
- Tomoya Ota
- Research Faculty of Agriculture, Hokkaido University (Kita 9 Nishi 9, Sapporo 060-8589, Japan)
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University (Kita 9 Nishi 9, Sapporo 060-8589, Japan)
| | - Linda Elizabeth Jewell
- Agriculture and Agri-Food Canada (204 Brookfield Road, St. John's, Newfoundland and Labrador A1E 6J5)
| | - Tom Hsiang
- School of Environmental Sciences, University of Guelph (Guelph, ON N1G 2W1, Canada)
| | - Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan)
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University (Kita 9 Nishi 9, Sapporo 060-8589, Japan)
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4
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Luo W, Suzuki R, Imai R. Precise in planta genome editing via homology-directed repair in wheat. Plant Biotechnol J 2023; 21:668-670. [PMID: 36529912 PMCID: PMC10037140 DOI: 10.1111/pbi.13984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/25/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Affiliation(s)
- Weifeng Luo
- Genome‐Edited Crop Development Group, Institute of Agrobiological SciencesNational Agriculture and Food Research Organization (NARO)TsukubaJapan
| | - Rintaro Suzuki
- Genome‐Edited Crop Development Group, Institute of Agrobiological SciencesNational Agriculture and Food Research Organization (NARO)TsukubaJapan
| | - Ryozo Imai
- Genome‐Edited Crop Development Group, Institute of Agrobiological SciencesNational Agriculture and Food Research Organization (NARO)TsukubaJapan
- Faculty of Life and Environmental SciencesUniversity of TsukubaTsukubaJapan
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5
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Sasaki K, Imai R. Mechanisms of cold-induced immunity in plants. Physiol Plant 2023; 175:e13846. [PMID: 36546699 DOI: 10.1111/ppl.13846] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Overwintering plants acquire substantial levels of freezing tolerance through cold acclimation or winter hardening. This process is essential for the plants survival to harsh winter conditions. In the areas where persistent snow cover lasts several months, plants are protected from freezing but are, however, exposed to other harsh conditions, such as dark, cold, and high humidity. These conditions facilitate the infection of psychrophilic pathogens, which are termed "snow molds." To fight against infection of snow molds, overwintering plants develop disease resistance via the process of cold acclimation. Compared with pathogen-induced disease resistance, the molecular mechanisms of cold-induced disease resistance have yet to be fully elucidated. In this review, we outline the recent progress in our understanding of disease resistance acquired through cold acclimation.
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Affiliation(s)
- Kentaro Sasaki
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Ryozo Imai
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
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6
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Fukuda K, Uefune M, Fukaki H, Yamauchi Y, Hara-Nishimura I, Ozawa R, Matsui K, Sugimoto K, Okada K, Imai R, Takahashi K, Enami S, Wurst R, Takabayashi J. Aerial (+)-borneol modulates root morphology, auxin signalling and meristematic activity in Arabidopsis roots. Biol Lett 2022; 18:20210629. [PMID: 35506238 PMCID: PMC9065954 DOI: 10.1098/rsbl.2021.0629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
One of the characteristic aspects of odour sensing in humans is the activation of olfactory receptors in a slightly different manner in response to different enantiomers. Here, we focused on whether plants showed enantiomer-specific response similar to that in humans. We exposed Arabidopsis seedlings to methanol (control) and (+)- or (-)-borneol, and found that only (+)-borneol reduced the root length. Furthermore, the root-tip width was more increased upon (+)-borneol exposure than upon (-)-borneol exposure. In addition, root-hair formation was observed near the root tip in response to (+)-borneol. Auxin signalling was strongly reduced in the root tip following exposure to (+)-borneol, but was detected following exposure to (-)-borneol and methanol. Similarly, in the root tip, the activity of cyclin B1:1 was detected on exposure to (-)-borneol and methanol, but not on exposure to (+)-borneol, indicating that (+)-borneol inhibits the meristematic activity in the root. These results partially explain the (+)-borneol-specific reduction in the root length of Arabidopsis. Our results indicate the presence of a sensing system specific for (+)-borneol in Arabidopsis.
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Affiliation(s)
- Kyohei Fukuda
- Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan
| | - Masayoshi Uefune
- Department of Agrobiological Resources, Faculty of Agriculture, Meijo University, Nagoya 468-8502, Japan
| | - Hidehiro Fukaki
- Department of Biology, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Yasuo Yamauchi
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | | | - Rika Ozawa
- Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan
| | - Kenji Matsui
- Graduate School of Sciences and Technology for Innovation (Faculty of Agriculture), Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Koichi Sugimoto
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba 305-8572, Japan
| | - Kazunori Okada
- Agro-Biotechnology Research Center (AgTech), Graduate School of Agricultural and Life Sciences (GSALS), University of Tokyo, Tokyo 113-8657, Japan
| | - Ryozo Imai
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba 305-8604, Japan
| | - Kenshi Takahashi
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Shinichi Enami
- National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - René Wurst
- Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan
| | - Junji Takabayashi
- Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan
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Kumagai Y, Liu Y, Hamada H, Luo W, Zhu J, Kuroki M, Nagira Y, Taoka N, Katoh E, Imai R. Introduction of a second "Green Revolution" mutation into wheat via in planta CRISPR/Cas9 delivery. Plant Physiol 2022; 188:1838-1842. [PMID: 34908145 PMCID: PMC8968346 DOI: 10.1093/plphys/kiab570] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/11/2021] [Indexed: 05/24/2023]
Abstract
Direct delivery of CRISPR/Cas9 ribonucleoproteins into the shoot apical meristem via particle bombardment enabled introduction of a semidwarf1-orthologous mutation into an elite wheat variety.
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Affiliation(s)
- Yuya Kumagai
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Yuelin Liu
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Haruyasu Hamada
- Biotechnology Research Laboratories, Agri-Bio Research Center, Kaneka Corporation, Iwata, Shizuoka 438-0802, Japan
| | - Weifeng Luo
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Jianghui Zhu
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Misa Kuroki
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Yozo Nagira
- Biotechnology Research Laboratories, Agri-Bio Research Center, Kaneka Corporation, Iwata, Shizuoka 438-0802, Japan
| | - Naoaki Taoka
- Biotechnology Research Laboratories, Agri-Bio Research Center, Kaneka Corporation, Iwata, Shizuoka 438-0802, Japan
| | - Etsuko Katoh
- Structural Biology Team, Advanced Analysis Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki 305-8602, Japan
| | - Ryozo Imai
- Genome-Edited Crop Development Group, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
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8
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Abe T, Yoshimua Y, Imai R, Sato Y. A Combined Assessment Method of Phase Angle and Skeletal Muscle Index to Better Predict Functional Recovery after Acute Stroke. J Nutr Health Aging 2022; 26:445-451. [PMID: 35587756 DOI: 10.1007/s12603-022-1777-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES We aimed to investigate whether combination assessment of phase angle (PhA) and skeletal muscle index (SMI), was a possible predictor of physical function at discharge from the hospital in patients with acute stroke. RESEARCH METHODS AND PROCEDURES In this retrospective cohort study that was conducted from May 2020 and July 2021, we determined PhA and SMI using bioimpedance analysis (BIA) in patients with acute stroke. Patients were classified as normal, low PhA + SMI group, pre-sarcopenia (low SMI only), and dynapenia (low PhA only) using cut-off points (men: SMI < 7.0 kg/m2, PhA < 4.05 degrees; women: SMI < 5.7 kg/m2, PhA < 3.55 degrees). The main outcome was physical function based on functional independence measure motor (FIM-motor) score at discharge. Multiple regression analysis was used to determine the association between low PhA + SMI and FIM-motor score. RESULTS We included 244 patients (161 men; mean age, 73.9 years). low PhA + SMI was found in 21 (8.6%) patients. Multiple regression analysis showed that low PhA + SMI was independently associated with the FIM-motor score at discharge (β= -0.099, 95%CI: -0.193,-0.005, p = 0.039). The PhA cutoff values for determining good functional results using receiver operating characteristic (ROC) curves were 5.36 for men (sensitivity = 0.769, specificity = 0.586, area under the curve [AUC] = 0.682), and 3.85 for women (sensitivity = It was 0.881, specificity = 0.481, AUC). Further, pearson correlation coefficient showed that PhA was significantly related to FIM-motor score in patients with mild or moderately severe stroke (mild: r = 0.472, p < 0.001; moderate: r = 0.524, p < 0.001). CONCLUSIONS Combination of low PhA and SMI values at baseline, was an independent predictor of physical function at discharge in patients with acute stroke. The findings highlighted the importance of measuring PhA and SMI using BIA in patients with acute stroke.
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Affiliation(s)
- T Abe
- Yoshihiro Yoshimura, Kumamoto Rehabilitation Hospital, Kikuchi, Kumamoto Japan,
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Komatsu J, Nishimura Y, Sugane H, Hosoda H, Imai R, Nakaoka Y, Nishida K, Seki S, Kubokawa S, Kawai K, Hamashige N, Doi Y. Acute circumflex coronary artery occlusion; dilemma in diagnosis and management. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1476] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Acute coronary syndrome (ACS) with occlusion of the circumflex coronary artery (LCX) poses diagnostic dilemma that may lead to a delay in reperfusion.
Purpose
We sought to assess the diagnostic significance of initial electrocardiography (ECG) changes in patients with acute LCX occlusion in relation to its clinical characteristics and the management.
Methods
From consecutive 1269 patients with ACS who were admitted to our institution during a 5-year period (2015–2019), 138 patients with ACS due to LCX occlusion were analyzed for clinical, ECG and angiographic presentation, and the door-to-balloon (DTB) time. ECG changes were classified into 4 different patterns: 1) ST-elevation in inferior/lateral leads (ST-E); 2) ST-depression in V1-V4 (ST-D); 3) no significant ST changes (No-ST); and 4) others.
Results
(1) No-ST pattern was found in 47 patients (34%), ST-E in 47 patients (34%), ST-D in 25 patients (18%) and others in 19 patients (14%). (2) Occlusion site: Proximal LCX; 16 patients with No-ST (34%), 6 patients with ST-E (13%), 13 patients with ST-D (52%). Distal LCX; 28 patients with No-ST (60%), 35 patients with ST-E (74%), 11 patients with ST-D (44%) (p=0.007). (Table) (3) Echocardiographic identification of left ventricular asynergy; 31 patients with No-ST (66%), 38 patients with ST-E (81%), 22 patients with ST-D (88%). (4) No-ST group was associated with longer DTB time; 245 min (170–562 min), compared to 93 min (83–121 min) in ST-E group and 97 min (70–129 min) in ST-D group (p<0.0001). DTB time ≤90 min was significantly uncommon in No-ST group (11%), compared to ST-E group (46%) and ST-D group (43%) (p=0.0004). (Figure)
Conclusion
One-third of the patients with LCX-ACS showed no ST changes, resulting in significantly longer DTB time. Improving diagnostic accuracy with anticipation for LCX-ACS and the use of echocardiographic examination and also the possible application of posterior leads (V7-V9) recording is challenging but critical to avoid delayed reperfusion and to improve outcomes in these patients without ECG changes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- J Komatsu
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nishimura
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Sugane
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Hosoda
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - R Imai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nakaoka
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Nishida
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Seki
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Kubokawa
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Kawai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - N Hamashige
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Doi
- Chikamori Hospital, Cardiomyopathy Institute, Kochi, Japan
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10
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Snyder RP, Guerin MT, Hargis BM, Imai R, Kruth PS, Page G, Rejman E, Barta JR. Exploiting digital droplet PCR and Next Generation Sequencing technologies to determine the relative abundance of individual Eimeria species in a DNA sample. Vet Parasitol 2021; 296:109443. [PMID: 34147767 DOI: 10.1016/j.vetpar.2021.109443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/24/2021] [Accepted: 04/29/2021] [Indexed: 10/21/2022]
Abstract
DNA-based diagnostic assays for detecting infections with Eimeria species have been limited to providing identification and presence/absence data for samples containing oocysts. Modern technologies that generate quantitative data, such as droplet digital PCR (ddPCR) and Next Generation Sequencing (NGS), utilize a relatively short amplicon size containing sufficient species-specific variation for reliable species level identification. Targeting the cytochrome c oxidase subunit III gene in the mitochondrial genome, we established protocols using these technologies to determine the relative abundance of the number of copies/μL of Eimeria species in a sample. Samples from chickens of known and unknown Eimeria species composition were analyzed to determine the suitability of these technologies as diagnostic assays. All technologies demonstrated robust capability of identifying and quantifying the Eimeria species in samples. The new quantitative assays described herein will produce invaluable detail of Eimeria species infections for an array of situations in commercial chicken production systems, enabling further characterization of the disease profile and allowing for the development or enhancement of new intervention strategies.
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Affiliation(s)
- R P Snyder
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada.
| | - M T Guerin
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada
| | - B M Hargis
- Department of Poultry Science, University of Arkansas, 1260 W. Maple, Fayetteville, AR, 72703, USA
| | - R Imai
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada
| | - P S Kruth
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada
| | - G Page
- Trouw Nutrition R&D, Stationsstraat 77, Amersfoort, 3800 AG, The Netherlands
| | - E Rejman
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada
| | - J R Barta
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario, N1G 2W1, Canada
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11
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Kuwabara C, Sasaki K, Umeki N, Hoshino T, Saburi W, Matsui H, Imai R. A model system for studying plant-microbe interactions under snow. Plant Physiol 2021; 185:1489-1494. [PMID: 33575782 PMCID: PMC8133538 DOI: 10.1093/plphys/kiab027] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
A model plant–pathogen system using Arabidopsis and its natural snow mold pathogen Typhula ishikariensis demonstrated Arabidopsis plants develop disease resistance through cold acclimation.
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Affiliation(s)
- Chikako Kuwabara
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Sapporo, Japan
| | - Kentaro Sasaki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Sapporo, Japan
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Natsuki Umeki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Sapporo, Japan
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Tamotsu Hoshino
- Bioproduction Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Hirokazu Matsui
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Sapporo, Japan
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
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12
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Liu Y, Luo W, Linghu Q, Abe F, Hisano H, Sato K, Kamiya Y, Kawaura K, Onishi K, Endo M, Toki S, Hamada H, Nagira Y, Taoka N, Imai R. In planta Genome Editing in Commercial Wheat Varieties. Front Plant Sci 2021; 12:648841. [PMID: 33790930 PMCID: PMC8006942 DOI: 10.3389/fpls.2021.648841] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 02/19/2021] [Indexed: 05/03/2023]
Abstract
Limitations for the application of genome editing technologies on elite wheat (Triticum aestivum L.) varieties are mainly due to the dependency on in vitro culture and regeneration capabilities. Recently, we developed an in planta particle bombardment (iPB) method which has increased process efficiency since no culture steps are required to create stably genome-edited wheat plants. Here, we report the application of the iPB method to commercially relevant Japanese elite wheat varieties. The biolistic delivery of gold particles coated with plasmids expressing CRISPR/Cas9 components designed to target TaQsd1 were bombarded into the embryos of imbibed seeds with their shoot apical meristem (SAM) exposed. Mutations in the target gene were subsequently analyzed within flag leaf tissue by using cleaved amplified polymorphic sequence (CAPS) analysis. A total of 9/358 (2.51%) of the bombarded plants (cv. "Haruyokoi," spring type) carried mutant alleles in the tissue. Due to the chimeric nature of the T0 plants, only six of them were inherited to the next (T1) generation. Genotypic analysis of the T2 plants revealed a single triple-recessive homozygous mutant of the TaQsd1 gene. Compared to wild type, the homozygous mutant exhibited a 7 days delay in the time required for 50% seed germination. The iPB method was also applied to two elite winter cultivars, "Yumechikara" and "Kitanokaori," which resulted in successful genome editing at slightly lower efficiencies as compared to "Haruyokoi." Taken together, this report demonstrates that the in planta genome editing method through SAM bombardment can be applicable to elite wheat varieties that are otherwise reluctant to callus culture.
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Affiliation(s)
- Yuelin Liu
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Weifeng Luo
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Qianyan Linghu
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Fumitaka Abe
- Division of Basic Research, Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Hiroshi Hisano
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Kazuhiro Sato
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Yoko Kamiya
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan
| | - Kanako Kawaura
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan
| | - Kazumitsu Onishi
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Masaki Endo
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Seiichi Toki
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Haruyasu Hamada
- Biotechnology Research Laboratories, Pharma and Supplemental Nutrition Solutions Vehicle, Kaneka Corporation, Takasago, Japan
| | - Yozo Nagira
- Biotechnology Research Laboratories, Pharma and Supplemental Nutrition Solutions Vehicle, Kaneka Corporation, Takasago, Japan
| | - Naoaki Taoka
- Biotechnology Research Laboratories, Pharma and Supplemental Nutrition Solutions Vehicle, Kaneka Corporation, Takasago, Japan
| | - Ryozo Imai
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
- *Correspondence: Ryozo Imai,
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13
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Nakano Y, Okumura N, Imai R, Yoshida M, Shimokata S, Adachi S, Murohara T, Kondo T. Impact of higher detection rate of residual pulmonary thromboemboli one-year after acute pulmonary embolism: modified CT scan imaging method with modified CT obstruction index. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2242] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Recently, post pulmonary embolism (PE) syndrome or chronic thromboembolic disease after acute PE, has been recognized as important long-term complications. Furthermore, patients may develop with chronic thromboembolic pulmonary hypertension.
Purpose
We aimed to evaluate the frequency of residual pulmonary thromboemboli after acute PE by using our “higher”-resolution CT scan imaging method to detect residual thromboemboli down to sub-segmental pulmonary arteries.
Methods
This study was a prospective multi-center observational study. We enrolled consecutive 34 patients with acute symptomatic PE whose informed consent was obtained, and followed up for one year. One year after the onset of acute PE, patients were referred to our hospital and multiple examination including CT scan, 6-minute walk test (6MWT), questionnaire of SF-36, echocardiography and laboratory testing were performed. Additionally, we have modified the CT obstruction index (CTOI) to quantitatively evaluate the thromboemboli down to sub-segmental pulmonary arteries.
Results
Mean age was 60.5±15.8 years, and 56% were male. No patient was categorized as low recurrent VTE risk which was caused by transient factors, one patient was associated with active cancer, and 12% had known thrombophilia. In 85% of the patients, this onset was the first obvious episode of PE. At diagnosis, elevated B-type natriuretic peptide (BNP) (≥100 pg/ml) or N-terminal (NT)-proBNP (≥500 pg/ml) was observed in 45% of the patients. Median tricuspid regurgitation peak gradient (TRPG) by echocardiography was 30.9 (19.3–50.1) mmHg. Among all, 35% of the patients received single-drug approach with DOACs. At discharge, all of the patients except two were treated with DOACs.
One year after the onset, 21% of the patient were in NYHA II and others were in NYHA I. It was notable that pulmonary thromboemboli was detected by our CT scan in 76% of the patients. Modified CTOI was median 11.9 (1.8–24.4) % as shown in the figure.
In multiple regression analysis, TRPG at diagnosis and BNP at one month were significantly associated with mCTOI (β=0.536, p=0.002 and β=−0.482, p=0.003, respectively). Additionally, lowest SpO2 during 6MWT after one year from the onset, tended to inversely associate with mCTOI (β=−0.341, p=0.052).
Conclusions
Using our modified CT scan imaging method and modified CTOI, residual pulmonary thromboemboli was able to be detected more frequently than the previous studies. Residual pulmonary thromboemboli could be one of the cause of the post PE syndrome and lead to exercise-induced desaturation.
Figures
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Nakano
- Nagoya University, Graduate School of Medicine, Department of Advanced Medicine in Cardiopulmonary Disease, Nagoya, Japan
| | - N Okumura
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - R Imai
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - M Yoshida
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - S Shimokata
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - S Adachi
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Kondo
- Nagoya University, Graduate School of Medicine, Department of Advanced Medicine in Cardiopulmonary Disease, Nagoya, Japan
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14
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Nakano Y, Imai R, Yoshida M, Shimokata S, Adachi S, Murohara T, Kondo T. Clinical course of pulmonary embolism patients treated with DOACs: comparing prognosis, recurrent thromboembolism, and major bleeding between patients with and without cancer. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2279] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Venous thromboembolism (VTE) is the third frequent acute cardiovascular syndrome in the Europe and Japan. Since direct oral anticoagulants (DOACs) are widely used now, the morbidity and mortality of pulmonary embolism (PE) patients especially associated with cancer needs to be re-evaluated.
Purpose
We evaluated the clinical course of patients with PE mainly treated with DOACs.
Methods
This retrospective observational study was conducted in a single center. The data were collected from the medical record of consecutive patients who received inpatient treatment of PE. In this study, we have compared PE patients with cancer (cancer PE) to those without cancer (non-cancer PE) and evaluated the mortality, recurrent of VTE and major bleedings.
Results
In total, 140 patients were enrolled: 94 patients were cancer-related, and 46 patients were without cancer (Table). The type of the tumor in cancer PE patients were as follows: gastric 8 (9%), esophageal 5 (5%), pancreatic 12 (13%), lung 14 (15%), lymphoma 2 (2%), gynecologic 17 (18%), renal 2 (2%), bile duct 8 (9%), colon 12 (13%), and others 17 (18%).
Kaplan-Meier curve showed that the cumulative all-cause mortality was significantly higher in the cancer PE group (35/94 (37%) vs. 2/46 (4%), P<0.001 (log rank), HR 10.3 [95% CI:2.5–43.3]). The cumulative incidence of recurrent VTE was significantly higher in the cancer PE group (7/94 (7%) vs. 0/46, P=0.03 (log rank)). There was no significant difference in the cumulative incidence of major bleeding between the cancer PE group and the non-cancer PE group (8/94 (9%) vs. 5/46 (11%)).
Conclusions
The risk of recurrent VTE was still higher in cancer PE patients compared to non-cancer PE patients, although DOACs were used. Meanwhile the incidence of major bleeding was comparable in both groups, the risk of bleeding might be acceptable with using DOACs especially in cancer PE patients.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Nakano
- Nagoya University, Graduate School of Medicine, Department of Advanced Medicine in Cardiopulmonary Disease, Nagoya, Japan
| | - R Imai
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - M Yoshida
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - S Shimokata
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - S Adachi
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University, Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Kondo
- Nagoya University, Graduate School of Medicine, Department of Advanced Medicine in Cardiopulmonary Disease, Nagoya, Japan
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15
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Affiliation(s)
- S Ro
- From the Department of Pulmonary Medicine, Thoracic Center, St. Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan
| | - R Imai
- From the Department of Pulmonary Medicine, Thoracic Center, St. Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan
| | - T Tamura
- From the Department of Pulmonary Medicine, Thoracic Center, St. Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan
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16
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Imai R, Hamada H, Liu Y, Linghu Q, Kumagai Y, Nagira Y, Miki R, Taoka N. In planta particle bombardment (iPB): A new method for plant transformation and genome editing. Plant Biotechnol (Tokyo) 2020; 37:171-176. [PMID: 32821224 PMCID: PMC7434670 DOI: 10.5511/plantbiotechnology.20.0206a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Transformation is a key step in modern breeding technology that involves genome editing. The requirement for in vitro tissue culture and regeneration hampers application of this technology to commercially important varieties of many crop species. To overcome this problem, we developed a simple and reproducible in planta transformation method in wheat (Tritticum aestivum L.). Our in planta particle bombardment (iPB) method utilizes the shoot apical meristem (SAM) as a target tissue. The SAM contains a subepidermal cell layer termed L2, from which germ cells later develop during floral organogenesis. The iPB method can also be used for genome editing through transient CRISPR/Cas9 expression or direct delivery of the CRISPR/Cas9 ribonucleoprotein. In this review, we describe the iPB technology and provide an overview of its current and future applications in plant transformation and genome editing.
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Affiliation(s)
- Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tukuba, Ibaraki 305-8634, Japan
- E-mail: Tel & Fax: +81-29-838-8378
| | - Haruyasu Hamada
- Pharma & Supplemental Nutrition Solutions Vehicle, Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Hyogo 676-8688, Japan
| | - Yuelin Liu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tukuba, Ibaraki 305-8634, Japan
| | - Qianyan Linghu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tukuba, Ibaraki 305-8634, Japan
| | - Yuya Kumagai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tukuba, Ibaraki 305-8634, Japan
| | - Yozo Nagira
- Pharma & Supplemental Nutrition Solutions Vehicle, Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Hyogo 676-8688, Japan
| | - Ryuji Miki
- Pharma & Supplemental Nutrition Solutions Vehicle, Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Hyogo 676-8688, Japan
| | - Naoaki Taoka
- Pharma & Supplemental Nutrition Solutions Vehicle, Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Hyogo 676-8688, Japan
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17
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Taguchi Y, Saburi W, Imai R, Mori H. Efficient one-pot enzymatic synthesis of trehalose 6-phosphate using GH65 α-glucoside phosphorylases. Carbohydr Res 2020; 488:107902. [PMID: 31911362 DOI: 10.1016/j.carres.2019.107902] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/18/2019] [Accepted: 12/21/2019] [Indexed: 10/25/2022]
Abstract
Trehalose 6-phosphate (Tre6P) is an important intermediate for trehalose biosynthesis. Recent researches have revealed that Tre6P is an endogenous signaling molecule that regulates plant development and stress responses. The necessity of Tre6P in physiological studies is expected to be increasing. To achieve the cost-effective production of Tre6P, a novel approach is required. In this study, we utilized trehalose 6-phosphate phosphorylase (TrePP) from Lactococcus lactis to produce Tre6P. In the reverse phosphorolysis by the TrePP, 91.9 mM Tre6P was produced from 100 mM β-glucose 1-phosphate (β-Glc1P) and 100 mM glucose 6-phosphate (Glc6P). The one-pot reaction of TrePP and maltose phosphorylase (MP) enabled production of 65 mM Tre6P from 100 mM maltose, 100 mM Glc6P, and 20 mM inorganic phosphate. Addition of β-phosphoglucomutase to this reaction produced Glc6P from β-Glc1P and thus reduced requirement of Glc6P as a starting material. Within the range of 20-469 mM inorganic phosphate tested, the 54 mM concentration yielded the highest amount of Tre6P (33 mM). Addition of yeast increased the yield because of its glucose consumption. Finally, from 100 mmol maltose and 60 mmol inorganic phosphate, we successfully achieved production of 37.5 mmol Tre6P in a one-pot reaction (100 mL), and 9.4 g Tre6P dipotassium salt was obtained.
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Affiliation(s)
- Yodai Taguchi
- Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo, 060-8589, Japan.
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo, 060-8589, Japan.
| | - Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 1-2 Owashi, Tsukuba, Ibaraki, 305-8634, Japan.
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo, 060-8589, Japan.
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18
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Tezuka D, Kawamata A, Kato H, Saburi W, Mori H, Imai R. The rice ethylene response factor OsERF83 positively regulates disease resistance to Magnaporthe oryzae. Plant Physiol Biochem 2019; 135:263-271. [PMID: 30590260 DOI: 10.1016/j.plaphy.2018.12.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/18/2018] [Accepted: 12/18/2018] [Indexed: 05/08/2023]
Abstract
Rice blast caused by Magnaporthe oryzae is one of the most destructive diseases of rice (Oryza sativa) worldwide. Here, we report the identification and functional characterization of a novel ethylene response factor (ERF) gene, OsERF83, which was expressed in rice leaves in response to rice blast fungus infection. OsERF83 expression was also induced by treatments with methyl jasmonate, ethephon, and salicylic acid, indicating that multiple phytohormones could be involved in the regulation of OsERF83 expression under biotic stress. Subcellular localization and transactivation analyses demonstrated that OsERF83 is a nucleus-localized transcriptional activator. A gel-shift assay using recombinant OsERF83 protein indicated that, like other ERFs, it binds to the GCC box. Transgenic rice plants overexpressing OsERF83 exhibited significantly suppressed lesion formation after rice blast infection, indicating that OsERF83 positively regulates disease resistance in rice. Genes encoding several classes of pathogenesis-related (PR) proteins, including PR1, PR2, PR3, PR5, and PR10, were upregulated in the OsERF83ox plants. Taken together, our findings show that OsERF83 is a novel ERF transcription factor that confers blast resistance by regulating the expression of defense-related genes in rice.
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Affiliation(s)
- Daisuke Tezuka
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, 305-8602, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
| | - Aya Kawamata
- School of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
| | - Hideki Kato
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka, Sapporo, 062-8555, Japan
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
| | - Ryozo Imai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, 305-8602, Japan.
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19
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Affiliation(s)
- R Imai
- Division of Pulmonary Medicine, Thoracic Center, St. Luke's International Hospital, Tokyo, Japan
| | - T Jinta
- Division of Pulmonary Medicine, Thoracic Center, St. Luke's International Hospital, Tokyo, Japan
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20
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Hamada H, Liu Y, Nagira Y, Miki R, Taoka N, Imai R. Biolistic-delivery-based transient CRISPR/Cas9 expression enables in planta genome editing in wheat. Sci Rep 2018; 8:14422. [PMID: 30258105 PMCID: PMC6158239 DOI: 10.1038/s41598-018-32714-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 09/10/2018] [Indexed: 01/27/2023] Open
Abstract
The current application of genome editing to crop plants is limited to cultivars that are amenable to in vitro culture and regeneration. Here, we report an in planta genome-editing which does not require callus culture and regeneration. Shoot apical meristems (SAMs) contain a subepidermal cell layer, L2, from which germ cells later develop during floral organogenesis. The biolistic delivery of gold particles coated with plasmids expressing CRISPR/Cas9 components designed to target TaGASR7 were bombarded into SAM-exposed embryos of imbibed seeds. Bombarded embryos showing transient GFP expression within SAM were selected and grown into adult plants. Mutations in the target gene were assessed in fifth-leaf tissue by cleaved amplified polymorphic sequence analysis. Eleven (5.2%) of the 210 bombarded plants carried mutant alleles, and the mutations of three (1.4%) of these were inherited in the next generation. Genotype analysis of T1 plants identified plants homozygous for the three homeologous genes, which were all derived from one T0 plant. These plants showed no detectable integration of the Cas9 and guide RNA genes, indicating that transient expression of CRISPR/Cas9 introduced the mutations. Together, our current method can be used to achieve in planta genome editing in wheat using CRISPR/Cas9 and suggests possible applications to other recalcitrant plant species and variations.
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Affiliation(s)
- Haruyasu Hamada
- Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Japan
| | - Yuelin Liu
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, 305-8602, Japan
| | - Yozo Nagira
- Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Japan
| | - Ryuji Miki
- Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Japan
| | - Naoaki Taoka
- Biotechnology Research Laboratories, KANEKA CORPORATION, Takasago, Japan
| | - Ryozo Imai
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, 305-8602, Japan.
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21
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Stacchiotti S, Gronchi A, Fossati P, Akiyama T, Alapetite C, Baumann M, Blay JY, Bolle S, Boriani S, Bruzzi P, Capanna R, Caraceni A, Casadei R, Colia V, Debus J, Delaney T, Desai A, Dileo P, Dijkstra S, Doglietto F, Flanagan A, Froelich S, Gardner PA, Gelderblom H, Gokaslan ZL, Haas R, Heery C, Hindi N, Hohenberger P, Hornicek F, Imai R, Jeys L, Jones RL, Kasper B, Kawai A, Krengli M, Leithner A, Logowska I, Martin Broto J, Mazzatenta D, Morosi C, Nicolai P, Norum OJ, Patel S, Penel N, Picci P, Pilotti S, Radaelli S, Ricchini F, Rutkowski P, Scheipl S, Sen C, Tamborini E, Thornton KA, Timmermann B, Torri V, Tunn PU, Uhl M, Yamada Y, Weber DC, Vanel D, Varga PP, Vleggeert-Lankamp CLA, Casali PG, Sommer J. Best practices for the management of local-regional recurrent chordoma: a position paper by the Chordoma Global Consensus Group. Ann Oncol 2018; 28:1230-1242. [PMID: 28184416 PMCID: PMC5452071 DOI: 10.1093/annonc/mdx054] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [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] [Indexed: 12/16/2022] Open
Abstract
Chordomas are rare, malignant bone tumors of the skull-base and axial skeleton. Until recently, there was no consensus among experts regarding appropriate clinical management of chordoma, resulting in inconsistent care and suboptimal outcomes for many patients. To address this shortcoming, the European Society of Medical Oncology (ESMO) and the Chordoma Foundation, the global chordoma patient advocacy group, convened a multi-disciplinary group of chordoma specialists to define by consensus evidence-based best practices for the optimal approach to chordoma. In January 2015, the first recommendations of this group were published, covering the management of primary and metastatic chordomas. Additional evidence and further discussion were needed to develop recommendations about the management of local-regional failures. Thus, ESMO and CF convened a second consensus group meeting in November 2015 to address the treatment of locally relapsed chordoma. This meeting involved over 60 specialists from Europe, the United States and Japan with expertise in treatment of patients with chordoma. The consensus achieved during that meeting is the subject of the present publication and complements the recommendations of the first position paper.
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Affiliation(s)
| | - A Gronchi
- Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan
| | - P Fossati
- CNAO National Center for Oncological Hadrontherapy, Pavia.,Department of Radiotherapy, IEO-European Institute of Oncology, Milan, Italy
| | - T Akiyama
- Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - C Alapetite
- Department of Radiotherapy, Institut Curie, Paris.,Institut Curie-Centre de Protonthérapie d'Orsay (ICPO), Orsay, France
| | - M Baumann
- Department of Radiation Oncology, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - J Y Blay
- Cancer Medicine Department, Centre Léon Bérard, Lyon
| | - S Bolle
- Department of Radiotherapy, Gustave Roussy, Villejuif Cedex, France
| | - S Boriani
- Department of Degenerative and Oncological Spine Surgery, Rizzoli Institute Bologna, Bologna
| | - P Bruzzi
- Department of Epidemiology, IRCCS Azienda Ospedaliera Universitaria San Martino, IST Istituto Nazionale per la Ricerca sul Cancro, Genova
| | - R Capanna
- University Clinic of Orthopedics and Traumatology AO Pisa, Pisa
| | - A Caraceni
- Palliative Care Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan
| | - R Casadei
- Orthopedic Department, Rizzoli Institute Bologna, Bologna, Italy
| | - V Colia
- Departments of Cancer Medicine
| | - J Debus
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - T Delaney
- Department of Radiation Oncology, Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, USA
| | - A Desai
- Midlands Abdominal and Retroperitoneal Sarcoma Unit (MARSU), Queen Elizabeth Hospital, Birmingham
| | - P Dileo
- Department of Oncology, University College London Hospitals (UCLH), London, UK
| | - S Dijkstra
- Department of Orthopaedic Surgery, Leiden University Medical Centre, Leiden, The Netherlands
| | - F Doglietto
- Institute of Neurosurgery, University of Brescia, Brescia, Italy
| | - A Flanagan
- University College London Cancer Institute, London.,Histopathology Department, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - S Froelich
- Department of Neurosurgery, Paris Diderot University, Hôpital Lariboisière, Paris, France
| | - P A Gardner
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Z L Gokaslan
- Department of Neurosurgery, Brown University School of Medicine, Providence, USA
| | - R Haas
- Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - C Heery
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, Bethesda, USA
| | - N Hindi
- Department of Cancer Medicine, Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - P Hohenberger
- Sarcoma Unit, Interdisciplinary Tumor Center, Mannheim University Medical Center, University of Heidelberg, Mannheim, Germany
| | - F Hornicek
- Department of Orthopedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - R Imai
- National Institute of Radiological Sciences, Research Center Hospital for Charged Particle Therapy, Chiba, Japan
| | - L Jeys
- Department of Orthopaedics, Royal Orthopaedic Hospital Birmingham, Birmingham
| | - R L Jones
- Sarcoma Unit, Royal Marsden NHS Foundation Trust and Institute of Cancer Research, London, UK
| | - B Kasper
- Sarcoma Unit, Interdisciplinary Tumor Center, Mannheim University Medical Center, University of Heidelberg, Mannheim, Germany
| | - A Kawai
- Musculoskeletal Oncology and Rehabilitation Medicine, National Cancer Center, Tokio, Japan
| | - M Krengli
- Radiotherapy Department, University of Piemonte Orientale, Novara, Italy
| | - A Leithner
- Department of Orthopaedics and Orthopaedic Surgery, Medical University Graz, Graz, Austria
| | - I Logowska
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - J Martin Broto
- Department of Cancer Medicine, Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - D Mazzatenta
- Department of Neurosurgery, IRCCS Istituto delle Scienze Neurologiche, Bologna
| | - C Morosi
- Department of Radiology, Fondazione IRCCS Istituto Nazionale Tumori, Milan
| | - P Nicolai
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Brescia, Brescia, Italy
| | - O J Norum
- Department of Tumor Orthopedic Surgery, The Norwegian Radium Hospital, Oslo, Norway
| | - S Patel
- Department of Sarcoma Medical Oncology, MD Anderson Cancer Center, Houston, USA
| | - N Penel
- Cencer Medicine Department, Oscar Lambret Cancer Centre, Lille, France
| | - P Picci
- Laboratory of Oncologic Research, Istituto Ortopedico Rizzoli, Bologna
| | - S Pilotti
- Laboratory of Molecular Pathology, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - S Radaelli
- Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan
| | - F Ricchini
- Palliative Care Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan
| | - P Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - S Scheipl
- Department of Orthopaedics and Orthopaedic Surgery, Medical University Graz, Graz, Austria
| | - C Sen
- Department of Neurosurgery, NYU Langone Medical Center, New York
| | - E Tamborini
- Laboratory of Molecular Pathology, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - K A Thornton
- Center for Bone and Soft Tissue Sarcoma, Brigham and Women's Hospital/Dana-Farber Cancer Institute, Harvard Medical School, Boston, USA
| | - B Timmermann
- Particle Therapy Department, West German Proton Therapy Centre Essen, University Hospital Essen, Essen, Germany
| | - V Torri
- Oncology Unit, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - P U Tunn
- Department of Orthopaedic Oncology, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - M Uhl
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - Y Yamada
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, USA
| | - D C Weber
- Paul Scherrer Institut PSI, Villigen, Switzerland
| | - D Vanel
- Department of Radiology, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - P P Varga
- National Center for Spinal Disorders, Budapest, Hungary
| | | | | | - J Sommer
- Chordoma Foundation, Durham, USA
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22
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Liu Y, Imai R. Function of Plant DExD/H-Box RNA Helicases Associated with Ribosomal RNA Biogenesis. Front Plant Sci 2018; 9:125. [PMID: 29472942 PMCID: PMC5809497 DOI: 10.3389/fpls.2018.00125] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/23/2018] [Indexed: 05/18/2023]
Abstract
Ribosome biogenesis is a highly complex process that requires several cofactors, including DExD/H-box RNA helicases (RHs). RHs are a family of ATPases that rearrange the secondary structures of RNA and thus remodel ribonucleoprotein complexes. DExD/H-box RHs are found in most organisms and play critical roles in a variety of RNA-involved cellular events. In human and yeast cells, many DExD/H box RHs participate in multiple steps of ribosome biogenesis and regulate cellular proliferation and stress responses. In plants, several DExD/H-box RHs have been demonstrated to be associated with plant development and abiotic stress tolerance through their functions in modulating pre-rRNA processing. In this review, we summarize the pleiotropic roles of DExD/H-box RHs in rRNA biogenesis and other biological functions. We also describe the overall function of the DExD/H-box RH family in ribosome biogenesis based on data from human and yeast.
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23
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Affiliation(s)
- Haruyasu Hamada
- Hokkaido Agriculture Research Centre, National Agriculture and Food Research Organization Toyohira-ku, Sapporo, 062-8555, Japan.,Biotechnology Development Laboratories, KANEKA CORPORATION, Takasago, 6768688, Japan
| | - Qianyan Linghu
- Hokkaido Agriculture Research Centre, National Agriculture and Food Research Organization Toyohira-ku, Sapporo, 062-8555, Japan
| | - Yozo Nagira
- Biotechnology Development Laboratories, KANEKA CORPORATION, Takasago, 6768688, Japan
| | - Ryuji Miki
- Biotechnology Development Laboratories, KANEKA CORPORATION, Takasago, 6768688, Japan
| | - Naoaki Taoka
- Biotechnology Development Laboratories, KANEKA CORPORATION, Takasago, 6768688, Japan
| | - Ryozo Imai
- Hokkaido Agriculture Research Centre, National Agriculture and Food Research Organization Toyohira-ku, Sapporo, 062-8555, Japan. .,Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, 305-8602, Japan.
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24
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Ogawa S, Kondo M, Ino K, Ii T, Imai R, Furukawa TA, Akechi T. Fear of Fear and Broad Dimensions of Psychopathology over the Course of Cognitive Behavioural Therapy for Panic Disorder with Agoraphobia in Japan. East Asian Arch Psychiatry 2017; 27:150-155. [PMID: 29259145] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To examine the relationship of fear of fear and broad dimensions of psychopathology in panic disorder with agoraphobia over the course of cognitive behavioural therapy in Japan. METHODS A total of 177 Japanese patients with panic disorder with agoraphobia were treated with group cognitive behavioural therapy between 2001 and 2015. We examined associations between the change scores in Agoraphobic Cognitions Questionnaire or Body Sensations Questionnaire and the changes in subscales of Symptom Checklist-90 Revised during cognitive behavioural therapy controlling the change in panic disorder severity using multiple regression analysis. RESULTS Reduction in Agoraphobic Cognitions Questionnaire score was related to a decrease in all Symptom Checklist-90 Revised (SCL-90-R) subscale scores. Reduction in Body Sensations Questionnaire score was associated with a decrease in anxiety. Reduction in Panic Disorder Severity Scale score was not related to any SCL-90-R subscale changes. CONCLUSIONS Changes in fear of fear, especially maladaptive cognitions, may predict broad dimensions of psychopathology reductions in patients of panic disorder with agoraphobia over the course of cognitive behavioural therapy. For the sake of improving a broader range of psychiatric symptoms in patients of panic disorder with agoraphobia, more attention to maladaptive cognition changes during cognitive behavioural therapy is warranted.
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Affiliation(s)
- S Ogawa
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Kondo
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - K Ino
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Ii
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - R Imai
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T A Furukawa
- Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Akechi
- Department of Health Promotion and Human Behavior, Kyoto University Graduate School of Medicine / School of Public Health, Kyoto, Japan
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25
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Taguchi Y, Saburi W, Imai R, Mori H. Evaluation of acceptor selectivity of Lactococcus lactis ssp. lactis trehalose 6-phosphate phosphorylase in the reverse phosphorolysis and synthesis of a new sugar phosphate. Biosci Biotechnol Biochem 2017; 81:1512-1519. [PMID: 28537141 DOI: 10.1080/09168451.2017.1329620] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Trehalose 6-phosphate phosphorylase (TrePP), a member of glycoside hydrolase family 65, catalyzes the reversible phosphorolysis of trehalose 6-phosphate (Tre6P) with inversion of the anomeric configuration to produce β-d-glucose 1-phosphate (β-Glc1P) and d-glucose 6-phosphate (Glc6P). TrePP in Lactococcus lactis ssp. lactis (LlTrePP) is, alongside the phosphotransferase system, involved in the metabolism of trehalose. In this study, recombinant LlTrePP was produced and characterized. It showed its highest reverse phosphorolytic activity at pH 4.8 and 40°C, and was stable in the pH range 5.0-8.0 and at up to 30°C. Kinetic analyses indicated that reverse phosphorolysis of Tre6P proceeded through a sequential bi bi mechanism involving the formation of a ternary complex of the enzyme, β-Glc1P, and Glc6P. Suitable acceptor substrates were Glc6P, and, at a low level, d-mannose 6-phosphate (Man6P). From β-Glc1P and Man6P, a novel sugar phosphate, α-d-Glcp-(1↔1)-α-d-Manp6P, was synthesized with 51% yield.
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Affiliation(s)
- Yodai Taguchi
- a Research Faculty of Agriculture , Hokkaido University , Sapporo , Japan
| | - Wataru Saburi
- a Research Faculty of Agriculture , Hokkaido University , Sapporo , Japan
| | - Ryozo Imai
- b Division of Applied Genetics , National Agriculture and Food Research Organization , Tsukuba , Japan
| | - Haruhide Mori
- a Research Faculty of Agriculture , Hokkaido University , Sapporo , Japan
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26
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Sasaki K, Kuwabara C, Umeki N, Fujioka M, Saburi W, Matsui H, Abe F, Imai R. The cold-induced defensin TAD1 confers resistance against snow mold and Fusarium head blight in transgenic wheat. J Biotechnol 2016; 228:3-7. [PMID: 27080445 DOI: 10.1016/j.jbiotec.2016.04.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 12/03/2015] [Revised: 04/02/2016] [Accepted: 04/07/2016] [Indexed: 12/28/2022]
Abstract
TAD1 (Triticum aestivum defensin 1) is induced during cold acclimation in winter wheat and encodes a plant defensin with antimicrobial activity. In this study, we demonstrated that recombinant TAD1 protein inhibits hyphal growth of the snow mold fungus, Typhula ishikariensis in vitro. Transgenic wheat plants overexpressing TAD1 were created and tested for resistance against T. ishikariensis. Leaf inoculation assays revealed that overexpression of TAD1 confers resistance against the snow mold. In addition, the TAD1-overexpressors showed resistance against Fusarium graminearum, which causes Fusarium head blight, a devastating disease in wheat and barley. These results indicate that TAD1 is a candidate gene to improve resistance against multiple fungal diseases in cereal crops.
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Affiliation(s)
- Kentaro Sasaki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan
| | - Chikako Kuwabara
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan
| | - Natsuki Umeki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan
| | - Mari Fujioka
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan
| | - Wataru Saburi
- Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan
| | - Hirokazu Matsui
- Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan
| | - Fumitaka Abe
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba 305-8518, Japan
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan.
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27
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Tezuka D, Ito A, Mitsuhashi W, Toyomasu T, Imai R. The rice ent-KAURENE SYNTHASE LIKE 2 encodes a functional ent-beyerene synthase. Biochem Biophys Res Commun 2015; 460:766-71. [PMID: 25824047 DOI: 10.1016/j.bbrc.2015.03.104] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 03/19/2015] [Indexed: 10/23/2022]
Abstract
The rice genome contains a family of kaurene synthase-like (OsKSL) genes that are responsible for the biosynthesis of various diterpenoids, including gibberellins and phytoalexins. While many OsKSL genes have been functionally characterized, the functionality of OsKSL2 is still unclear and it has been proposed to be a pseudogene. Here, we found that OsKSL2 is drastically induced in roots by methyl jasmonate treatment and we successfully isolated a full-length cDNA for OsKSL2. Sequence analysis of the OsKSL2 cDNA revealed that the open reading frame of OsKSL2 is mispredicted in the two major rice genome databases, IRGSP-RAP and MSU-RGAP. In vitro conversion assay indicated that recombinant OsKSL2 catalyzes the cyclization of ent-CDP into ent-beyerene as a major and ent-kaurene as a minor product. ent-Beyerene is an antimicrobial compound and OsKSL2 is induced by methyl jasmonate; these data suggest that OsKSL2 is a functional ent-beyerene synthase that is involved in defense mechanisms in rice roots.
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Affiliation(s)
- Daisuke Tezuka
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan
| | - Akira Ito
- Faculty of Agriculture, Yamagata University, Yamagata 997-8555, Japan
| | - Wataru Mitsuhashi
- Faculty of Agriculture, Yamagata University, Yamagata 997-8555, Japan
| | - Tomonobu Toyomasu
- Faculty of Agriculture, Yamagata University, Yamagata 997-8555, Japan
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan.
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28
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Kim MH, Sonoda Y, Sasaki K, Kaminaka H, Imai R. Erratum to: Interactome analysis reveals versatile functions of Arabidopsis COLD SHOCK DOMAIN PROTEIN 3 in RNA processing within the nucleus and cytoplasm. Cell Stress Chaperones 2015; 20:397. [PMID: 25604512 PMCID: PMC4326378 DOI: 10.1007/s12192-014-0567-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Myung-Hee Kim
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Yutaka Sonoda
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Kentaro Sasaki
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Hironori Kaminaka
- />Laboratory of Plant Molecular Biology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Ryozo Imai
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
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29
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Chojnacka M, Szewińska J, Mielecki M, Nykiel M, Imai R, Bielawski W, Orzechowski S. A triticale water-deficit-inducible phytocystatin inhibits endogenous cysteine proteinases in vitro. J Plant Physiol 2015; 174:161-165. [PMID: 25462979 DOI: 10.1016/j.jplph.2014.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/24/2014] [Accepted: 09/28/2014] [Indexed: 06/04/2023]
Abstract
Water-deficit is accompanied by an increase in proteolysis. Phytocystatins are plant inhibitors of cysteine proteinases that belong to the papain and legumain family. A cDNA encoding the protein inhibitor TrcC-8 was identified in the vegetative organs of triticale. In response to water-deficit, increases in the mRNA levels of TrcC-8 were observed in leaf and root tissues. Immunoblot analysis indicated that accumulation of the TrcC-8 protein occurred after 72h of water-deficit in the seedlings. Using recombinant protein, inhibitory activity of TrcC-8 against cysteine proteases from triticale and wheat tissues was analyzed. Under water-deficit conditions, there are increases in cysteine proteinase activities in both plant tissues. The cysteine proteinase activities were inhibited by addition of the recombinant TrcC-8 protein. These results suggest a potential role for the triticale phytocystatin in modulating cysteine proteinase activities during water-deficit conditions.
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Affiliation(s)
- Magdalena Chojnacka
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
| | - Joanna Szewińska
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
| | - Marcin Mielecki
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland.
| | - Małgorzata Nykiel
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan.
| | - Wiesław Bielawski
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
| | - Sławomir Orzechowski
- Department of Biochemistry, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
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30
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Sutoh K, Washio K, Imai R, Wada M, Nakai T, Yamauchi D. An N-terminal region of a Myb-like protein is involved in its intracellular localization and activation of a gibberellin-inducible proteinase gene in germinated rice seeds. Biosci Biotechnol Biochem 2015; 79:747-59. [PMID: 25559339 DOI: 10.1080/09168451.2014.998620] [Citation(s) in RCA: 3] [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] [Indexed: 12/15/2022]
Abstract
The expression of the gene for a proteinase (Rep1) is upregulated by gibberellins. The CAACTC regulatory element (CARE) of the Rep1 promoter is involved in the gibberellin response. We isolated a cDNA for a CARE-binding protein containing a Myb domain in its carboxyl-terminal region and designated the gene Carboxyl-terminal Myb1 (CTMyb1). This gene encodes two polypeptides of two distinctive lengths, CTMyb1L and CTMyb1S, which include or exclude 213 N-terminal amino acid residues, respectively. CTMyb1S transactivated the Rep1 promoter in the presence of OsGAMyb, but not CTMyb1L. We observed an interaction between CTMyb1S and the rice prolamin box-binding factor (RPBF). A bimolecular fluorescence complex analysis detected the CTMyb1S and RPBF complex in the nucleus, but not the CTMyb1L and RPBF complex. The results suggest that the arrangement of the transfactors is involved in gibberellin-inducible expression of Rep1.
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Affiliation(s)
- Keita Sutoh
- a R&D Planning Admin Dept , Life Science Institute Co. Ltd , Tokyo , Japan
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31
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Tachibana D, Koyama M, Saito M, Hoshi M, Imai R, Kamada T. Heavy ion radiotherapy for recurrent metastatic lung tumor during pregnancy. Eur J Obstet Gynecol Reprod Biol 2015; 184:127. [DOI: 10.1016/j.ejogrb.2014.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 11/04/2014] [Accepted: 11/11/2014] [Indexed: 11/30/2022]
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Abstract
Cold shock domain (CSD) proteins are RNA chaperones that destabilize RNA secondary structures. Arabidopsis Cold Shock Domain Protein 2 (AtCSP2), one of the 4 CSD proteins (AtCSP1-AtCSP4) in Arabidopsis, is induced during cold acclimation but negatively regulates freezing tolerance. Here, we analyzed the function of AtCSP2 in salt stress tolerance. A double mutant, with reduced AtCSP2 and no AtCSP4 expression (atcsp2-3 atcsp4-1), displayed higher survival rates after salt stress. In addition, overexpression of AtCSP2 resulted in reduced salt stress tolerance. These data demonstrate that AtCSP2 acts as a negative regulator of salt stress tolerance in Arabidopsis.
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Affiliation(s)
- Kentaro Sasaki
- Hokkaido Agricultural Research Center (HARC); National Agriculture and Food Research Organization (NARO); Toyohira-ku, Sapporo, Japan
- These authors contributed equally to this work
| | - Yuelin Liu
- Graduate School of Agriculture; Hokkaido University; Kita-ku, Sapporo, Japan
- These authors contributed equally to this work
| | - Myung-Hee Kim
- Hokkaido Agricultural Research Center (HARC); National Agriculture and Food Research Organization (NARO); Toyohira-ku, Sapporo, Japan
- Center for Plant Aging Research; Institute for Basic Science (IBS), Daegu, Republic of Korea
| | - Ryozo Imai
- Hokkaido Agricultural Research Center (HARC); National Agriculture and Food Research Organization (NARO); Toyohira-ku, Sapporo, Japan
- Graduate School of Agriculture; Hokkaido University; Kita-ku, Sapporo, Japan
- Correspondence to: Ryozo Imai;
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33
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Abstract
Bacterial cold shock proteins (CSPs) function as RNA chaperones that destabilize RNA secondary structures. A quadruple mutant of Escherichia coli (cspA, cspB, cspG, and cspE) displays a cold-sensitive growth phenotype. Plant cold shock domain (CSD) proteins have been shown to complement the cold-sensitive phenotype of the E. coli mutant and to share a function with E. coli CSPs as RNA chaperones. This methodology, which is detailed here, can be utilized to reveal or probe the RNA chaperone activity of heterologous proteins.
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Affiliation(s)
- Myung-Hee Kim
- Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka, Sapporo, 062-8555, Japan
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34
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Christov NK, Christova PK, Kato H, Liu Y, Sasaki K, Imai R. TaSK5, an abiotic stress-inducible GSK3/shaggy-like kinase from wheat, confers salt and drought tolerance in transgenic Arabidopsis. Plant Physiol Biochem 2014; 84:251-260. [PMID: 25306528 DOI: 10.1016/j.plaphy.2014.10.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 10/01/2014] [Indexed: 05/20/2023]
Abstract
A novel cold-inducible GSK3/shaggy-like kinase, TaSK5, was isolated from winter wheat using a macroarray-based differential screening approach. TaSK5 showed high similarity to Arabidopsis subgroup I GSK3/shaggy-like kinases ASK-alpha, AtSK-gamma and ASK-epsilon. RNA gel blot analyses revealed TaSK5 induction by cold and NaCl treatments and to a lesser extent by drought treatment. TaSK5 functionally complemented the cold- and salt-sensitive phenotypes of a yeast GSK3/shaggy-like kinase mutant, △mck1. Transgenic Arabidopsis plants overexpressing TaSK5 cDNA showed enhanced tolerance to salt and drought stresses. By contrast, the tolerance of the transgenic plants to freezing stress was not altered. Microarray analysis revealed that a number of abiotic stress-inducible genes were constitutively induced in the transgenic Arabidopsis plants, suggesting that TaSK5 may function in a novel signal transduction pathway that appears to be unrelated to DREB1/CBF regulon and may involve crosstalk between abiotic and hormonal signals.
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Affiliation(s)
- Nikolai Kirilov Christov
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; AgroBioInstitute, Dragan Tsankov 8, Sofia 1164, Bulgaria
| | - Petya Koeva Christova
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; AgroBioInstitute, Dragan Tsankov 8, Sofia 1164, Bulgaria
| | - Hideki Kato
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Yuelin Liu
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
| | - Kentaro Sasaki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
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Xie G, Sasaki K, Imai R, Xie D. A redox-sensitive cysteine residue regulates the kinase activities of OsMPK3 and OsMPK6 in vitro. Plant Sci 2014; 227:69-75. [PMID: 25219308 DOI: 10.1016/j.plantsci.2014.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 07/01/2014] [Accepted: 07/03/2014] [Indexed: 06/03/2023]
Abstract
Two subgroup A rice mitogen-activated protein kinases (MAPKs), OsMPK3 and OsMPK6, have been implicated in multiple stress responses. However, the redox-control of the kinase activity of these proteins remains unknown. Here, immunoprecipitated OsMPK3 and OsMPK6 were initially activated in 15min, and this activation transiently increased in rice seedlings under H2O2 stress. Among the six conserved cysteine residues, only the fourth cysteine residues in the kinase domain VII, Cys(179) and Cys(210), were required for the in vitro kinase activities of OsMPK3 and OsMPK6, respectively. Moreover, the substitution of these specific cysteine residues with serine abrogated in vitro kinase responses to redox conditions. These results suggest a novel redox-control mechanism for the kinase activities of these MAPKs in vivo.
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Affiliation(s)
- Guosheng Xie
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Kentaro Sasaki
- Crop Breeding Division, Hokkaido Agricultural Research Center, National Agricultural and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Ryozo Imai
- Crop Breeding Division, Hokkaido Agricultural Research Center, National Agricultural and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Deying Xie
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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Imai R, Nagata Y, Senoo K, Wada H, Fukuda M, Takagi M, Yano K. Dehydrochlorination of γ-Hexachlorocyclohexane (γ-BHC) by γ-BHC-AssimilatingPseudomonas paucimobilis. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/00021369.1989.10869597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Imai R, Kim MH. [Functional conservation and diversification of cold shock domain proteins: a view from plants]. Seikagaku 2014; 86:474-478. [PMID: 25255630] [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: 06/03/2023]
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Radkova M, Vítámvás P, Sasaki K, Imai R. Development- and cold-regulated accumulation of cold shock domain proteins in wheat. Plant Physiol Biochem 2014; 77:44-48. [PMID: 24534004 DOI: 10.1016/j.plaphy.2014.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 01/09/2014] [Indexed: 06/03/2023]
Abstract
Cold shock domain (CSD) proteins, or Y-box proteins, are nucleic acid-binding proteins that are widely distributed from bacteria to higher plants and animals. Bacterial CSD proteins play an essential role in cold adaptation by destabilizing RNA secondary structures. WHEAT COLD SHOCK DOMAIN PROTEIN 1 (WCSP1) shares biochemical functions with bacterial CSD proteins and is possibly involved in cold adaptation. In this study, the temporal and spatial distribution of the wheat cold shock domain protein family (WCSPs) was serologically characterized with regard to plant development and cold adaptation. Four WCSP genes were identified through database analysis and were classified into three classes based on their molecular masses and protein domain structures. Class I (20 kD) and class II (23 kD) WCSPs demonstrated a clear pattern of accumulation in root and shoot meristematic tissues during vegetative growth. In response to cold, marked increases in WCSP levels were observed but the pattern of accumulation differed by tissue. Accumulation of WCSPs in crown tissue during cold acclimation was observed in the winter cultivar 'Chihokukomugi' but not in the spring cultivar 'Haruyutaka', suggesting a possible function for WCSPs in cold acclimation. During flower and seed development, protein levels of class I and class II WCSPs remained high. The class III WCSP (27 kD) was detected only during seed development. The highest level of class III WCSP accumulation was observed at the milky seed stage. Together, the results of this study provide a view of CSD protein accumulation throughout the life cycle of wheat and suggest that WCSPs function differentially in plant development and cold adaptation.
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Affiliation(s)
- Mariana Radkova
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; AgroBioInstitute, 8 Dragan Tzankov Bvld., Sofia 1000, Bulgaria
| | - Pavel Vítámvás
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; Department of Genetics and Plant Breeding, Crop Research Institute, Drnovská 507, 161 06 Prague 6, Ruzyně, Czech Republic
| | - Kentaro Sasaki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
| | - Ryozo Imai
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan; Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan.
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Imai R, Kamada T. PD-0234: Carbon ion radiotherapy for osteosarcoma of the trunk. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30339-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Late embryogenesis abundant (LEA) proteins are a family of hyper-hydrophilic proteins that accumulate in response to cellular dehydration. Originally identified as plant proteins associated with seed desiccation tolerance, LEA proteins have been identified in a wide range of organisms such as invertebrates and microorganisms. LEA proteins are thought to protect proteins and biomembranes under water-deficit conditions. Here, we characterized WCI16, a wheat (Triticum aestivum) protein that belongs to a class of plant proteins of unknown function, and provide evidence that WCI16 shares common features with LEA proteins. WCI16 was induced during cold acclimation in winter wheat. Based on its amino acid sequence, WCI16 is highly hydrophilic, like LEA proteins, despite having no significant sequence similarity to any of the known classes of LEA proteins. Recombinant WCI16 protein was soluble after boiling, and (1)H-nuclear magnetic resonance (NMR) spectroscopy revealed that the structure of WCI16 is random and has no hydrophobic regions. WCI16 exhibited in vitro cryoprotection of the freeze-labile enzyme l-lactate dehydrogenase as well as double-stranded DNA binding activity, suggesting that WCI16 may protect both proteins and DNA during environmental stresses. The biological relevance of these activities was supported by the subcellular localization of a green fluorescent protein (GFP)-fused WCI16 protein in the nucleus and cytoplasm. Heterologous expression of WCI16 in Arabidopsis (Arabidopsis thaliana) plants conferred enhanced freezing tolerance. Taken together, our results indicate that WCI16 represents a novel class of LEA proteins and is involved in freezing tolerance.
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Affiliation(s)
- Kentaro Sasaki
- Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
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Matsumoto T, Imagama S, Ito Z, Imai R, Kamada T, Shimoyama Y, Matsuyama Y, Ishiguro N. Total spondylectomy following carbon ion radiotherapy to treat chordoma of the mobile spine. Bone Joint J 2013; 95-B:1392-5. [PMID: 24078538 DOI: 10.1302/0301-620x.95b10.31269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The main form of treatment of a chordoma of the mobile spine is total en bloc spondylectomy (TES), but the clinical results are not satisfactory. Stand-alone carbon ion radiotherapy (CIRT) for bone and soft-tissue sarcomas has recently been reported to have a high rate of local control with a low rate of local recurrence. We report two patients who underwent TES after CIRT for treating a chordoma in the lumbar spine with good medium-term outcomes. At operation, there remained histological evidence of viable tumour cells in both cases. After the combination use of TES following CIRT, neither patient showed signs of recurrence at the follow-up examination. These two cases suggest that CIRT should be combined with total spondylectomy in the treatment of chordoma of the mobile spine.
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Affiliation(s)
- T Matsumoto
- Nagoya University Graduate School of Medicine, Department of Orthopaedic Surgery, 65 Tsurumai-cho, Showa-ku, Nagoya city, Aichi 466-8550, Japan
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Kim MH, Sonoda Y, Sasaki K, Kaminaka H, Imai R. Interactome analysis reveals versatile functions of Arabidopsis COLD SHOCK DOMAIN PROTEIN 3 in RNA processing within the nucleus and cytoplasm. Cell Stress Chaperones 2013; 18:517-25. [PMID: 23334891 PMCID: PMC3682024 DOI: 10.1007/s12192-012-0398-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Revised: 12/13/2012] [Accepted: 12/18/2012] [Indexed: 02/06/2023] Open
Abstract
Arabidopsis COLD SHOCK DOMAIN PROTEIN 3 (AtCSP3) shares an RNA chaperone function with E. coli cold shock proteins and regulates freezing tolerance during cold acclimation. Here, we screened for AtCSP3-interacting proteins using a yeast two-hybrid system and 38 candidate interactors were identified. Sixteen of these were further confirmed in planta interaction between AtCSP3 by a bi-molecular fluorescence complementation assay. We found that AtCSP3 interacts with CONSTANS-LIKE protein 15 and nuclear poly(A)-binding proteins in nuclear speckles. Three 60S ribosomal proteins (RPL26A, RPL40A/UBQ2, and RPL36aB) and the Gar1 RNA-binding protein interacted with AtCSP3 in the nucleolus and nucleoplasm, suggesting that AtCSP3 functions in ribosome biogenesis. Interactions with LOS2/enolase and glycine-rich RNA-binding protein 7 that are cold inducible, and an mRNA decapping protein 5 (DCP5) were observed in the cytoplasm. These data suggest that AtCSP3 participates in multiple complexes that reside in nuclear and cytoplasmic compartments and possibly regulates RNA processing and functioning.
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Affiliation(s)
- Myung-Hee Kim
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Yutaka Sonoda
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Kentaro Sasaki
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
| | - Hironori Kaminaka
- />Laboratory of Plant Molecular Biology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Ryozo Imai
- />Crop Breeding Research Division, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555 Japan
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Sasaki K, Kim MH, Imai R. Arabidopsis COLD SHOCK DOMAIN PROTEIN 2 is a negative regulator of cold acclimation. New Phytol 2013; 198:95-102. [PMID: 23323758 DOI: 10.1111/nph.12118] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 11/27/2012] [Indexed: 06/01/2023]
Abstract
Bacterial cold shock proteins (CSPs) act as RNA chaperones that destabilize mRNA secondary structures at low temperatures. Bacterial CSPs are composed solely of a nucleic acid-binding domain termed the cold shock domain (CSD). Plant CSD proteins contain an auxiliary domain in addition to the CSD but also show RNA chaperone activity. However, their biological functions are poorly understood. We examined Arabidopsis COLD SHOCK DOMAIN PROTEIN 2 (AtCSP2) using overexpressing and mutant lines. A double mutant, with reduced AtCSP2 and no AtCSP4, showed higher freezing tolerance than the wild-type when cold-acclimated. The increase in freezing tolerance was associated with up-regulation of CBF transcription factors and their downstream genes. By contrast, overexpression of AtCSP2 resulted in decreased freezing tolerance when cold-acclimated. In addition, late flowering and shorter siliques were observed in the overexpressing lines. AtCSP2 negatively regulates freezing tolerance and is partially redundant with its closest paralog, AtCSP4.
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Affiliation(s)
- Kentaro Sasaki
- Hokkaido Agriculture Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555, Japan
- Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
| | - Myung-Hee Kim
- Hokkaido Agriculture Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555, Japan
| | - Ryozo Imai
- Hokkaido Agriculture Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo, 062-8555, Japan
- Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, 060-8589, Japan
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Thalor SK, Berberich T, Lee SS, Yang SH, Zhu X, Imai R, Takahashi Y, Kusano T. Deregulation of sucrose-controlled translation of a bZIP-type transcription factor results in sucrose accumulation in leaves. PLoS One 2012; 7:e33111. [PMID: 22457737 PMCID: PMC3310857 DOI: 10.1371/journal.pone.0033111] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Accepted: 02/09/2012] [Indexed: 12/22/2022] Open
Abstract
Sucrose is known to repress the translation of Arabidopsis thaliana AtbZIP11 transcript which encodes a protein belonging to the group of S (S - stands for small) basic region-leucine zipper (bZIP)-type transcription factor. This repression is called sucrose-induced repression of translation (SIRT). It is mediated through the sucrose-controlled upstream open reading frame (SC-uORF) found in the AtbZIP11 transcript. The SIRT is reported for 4 other genes belonging to the group of S bZIP in Arabidopsis. Tobacco tbz17 is phylogenetically closely related to AtbZIP11 and carries a putative SC-uORF in its 5′-leader region. Here we demonstrate that tbz17 exhibits SIRT mediated by its SC-uORF in a manner similar to genes belonging to the S bZIP group of the Arabidopsis genus. Furthermore, constitutive transgenic expression of tbz17 lacking its 5′-leader region containing the SC-uORF leads to production of tobacco plants with thicker leaves composed of enlarged cells with 3–4 times higher sucrose content compared to wild type plants. Our finding provides a novel strategy to generate plants with high sucrose content.
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Affiliation(s)
- Sunil Kumar Thalor
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
| | - Thomas Berberich
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
- Biodiversity and Climate Research Center (BiK-F), BioCampus-Westend, Frankfurt, Germany
| | - Sung Shin Lee
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
| | - Seung Hwan Yang
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University Science Campus, Namdong, Cheoin-Gu, Yongin, Gyeonggi, Korea
| | - XuJun Zhu
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
| | - Ryozo Imai
- Crop Cold Research Team, National Agricultural Research Center for Hokkaido Region, Toyohira-ku, Sapporo, Japan
| | - Yoshihiro Takahashi
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
| | - Tomonobu Kusano
- Graduate School of Life Sciences, Tohoku University, Aoba, Sendai, Miyagi, Japan
- * E-mail:
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Wakuta S, Suzuki E, Saburi W, Matsuura H, Nabeta K, Imai R, Matsui H. OsJAR1 and OsJAR2 are jasmonyl-l-isoleucine synthases involved in wound- and pathogen-induced jasmonic acid signalling. Biochem Biophys Res Commun 2011; 409:634-9. [DOI: 10.1016/j.bbrc.2011.05.055] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 05/10/2011] [Indexed: 11/16/2022]
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Abstract
The National Institute of Radiological Sciences in Chiba, Japan has offered carbon ion radiotherapy (CIRT) since 1994 using carbon ion beams generated by the heavy ion medical accelerator in Chiba (HIMAC). The total number of cases treated with the HIMAC exceeded 5000 in July 2009. Here, we present a retrospective analysis of CIRT for sacral chordoma. The study included 95 patients with medically unresectable sacral chordomas treated between 1996 and 2007. The median age of the patients was 66 years. Of all the patients, 84 had not been treated previously and 11 had a locally recurrent tumour following previous resection. The carbon ion dose ranged from 52.8 to 73.6 GyE (median 70.4 GyE) in a total of 16 fixed fractions over 4 weeks. The median clinical target volume was 370 cm(3). The overall survival rate at 5 years for all 95 patients was 86%, and follow-up survival time was 42 months (range, 13-112 months). The 5-year local control rate was 88% and median time to local failure was 35 months (range, 13-60 months). Of the 95 patients, 91% remained ambulatory with or without a supportive device. Two patients experienced severe skin or soft tissue complications requiring skin grafts. 15 patients experienced severe sciatic nerve complications requiring continuing medication. CIRT appears effective and safe in the management of patients with sacral chordoma and offers a promising alternative to surgery.
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Affiliation(s)
- R Imai
- Research Center Hospital for Charged Particle Therapy, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba, Japan
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Wakuta S, Hamada S, Ito H, Imai R, Mori H, Matsuura H, Nabeta K, Matsui H. Comparison of Enzymatic Properties and Gene Expression Profiles of Two Tuberonic Acid Glucoside .BETA.-Glucosidases from Oryza sativa L. J Appl Glycosci (1999) 2011. [DOI: 10.5458/jag.jag.jag-2010_013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Abstract
The cold shock domain (CSD) is a nucleic acid binding domain that is widely conserved from bacteria to higher plants and animals. In Escherichia coli, cold shock proteins (CSPs) are composed solely of a CSD and function as RNA chaperones that destabilize RNA secondary structures. Cellular RNAs tend to be folded into unfavorable structures under low temperature conditions, and RNA chaperones resolve these structures, recovering functionality of the RNAs. CSP functions are associated mainly with cold adaptation, but they are also involved in other biological processes under normal growth conditions. Eukaryotic CSD proteins contain auxiliary domains in addition to the CSD and regulate many biological processes such as development and stress tolerance. In plants, it has been demonstrated that CSD proteins play essential roles in acquiring freezing tolerance. In addition, it has been suggested that some plant CSD proteins regulate embryo development, flowering time, and fruit development. In this review, we summarize the pleiotropic biological functions of CSP proteins in plants and discuss possible mechanisms by which plant CSD proteins regulate the functions of RNA molecules.
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Affiliation(s)
- Kentaro Sasaki
- Hokkaido Agriculture Research Center, National Agriculture and Food Research OrganizationSapporo, Japan
- Graduate School of Agriculture, Hokkaido UniversitySapporo, Japan
| | - Ryozo Imai
- Hokkaido Agriculture Research Center, National Agriculture and Food Research OrganizationSapporo, Japan
- Graduate School of Agriculture, Hokkaido UniversitySapporo, Japan
- *Correspondence: Ryozo Imai, Hokkaido Agriculture Research Center, National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan. e-mail:
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Kamada T, Imai R, Tsuji H, Imaizumi T, Tsujii H. Carbon Ion Radiotherapy for Primary Malignant Bone Tumors of the Sacrum. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sutoh K, Sanuki N, Sakaki T, Imai R. Specific induction of TaAAPT1, an ER- and Golgi-localized ECPT-type aminoalcoholphosphotransferase, results in preferential accumulation of the phosphatidylethanolamine membrane phospholipid during cold acclimation in wheat. Plant Mol Biol 2010; 72:519-531. [PMID: 20024669 DOI: 10.1007/s11103-009-9588-5] [Citation(s) in RCA: 5] [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] [Received: 07/07/2009] [Accepted: 12/03/2009] [Indexed: 05/28/2023]
Abstract
Cold acclimation requires substantial alteration in membrane property. In contrast to well-documented fatty acid unsaturation during cold acclimation, changes in phospholipid biosynthesis during cold acclimation are less understood. Here, we isolated and characterized two aminoalcoholphosphotransferase (AAPT) cDNAs, TaAAPT1 and TaAAPT2, from wheat. AAPTs utilize diacylglycerols and CDP-choline/ethanolamine as substrates and catalyze the final step of the CDP-choline/ethanolamine pathway for phosphatidylcholine (PC)/phosphatidylethanolamine (PE) synthesis, respectively. Functionality of TaAAPT1 and TaAAPT2 was demonstrated by heterologous expression in a yeast cpt1Delta ept1Delta double mutant that lacks both AAPT activities. Detailed characterization of AAPT activities from the transformed mutant cells indicated that TaAAPT1 is an ECPT-type enzyme with higher ethanolamine phosphotransferase (EPT) activity than choline phosphotransferase (CPT) activity, while TaAAPT2 is a CEPT-type with the opposite substrate preference. Transient expression of GFP-fused TaAAPT1 and TaAAPT2 proteins in wheat and onion cells indicated they are localized to both the endoplasmic reticulum and Golgi apparatus, suggesting that the final synthesis of PE and PC via the CDP-choline/ethanolamine pathway occurs in these organella. Quantitative PCR analyses revealed that TaAAPT1 expression is strongly induced by cold, while TaAAPT2 was constitutively expressed at lower levels. Measurement of phospholipid content in wheat leaves indicated that PE is more prominently increased in response to cold than PC and accordingly PE/PC ratio increased from 0.385 to 0.530 during 14 days of cold acclimation. Together, these data suggested that an increase in the PE/PC ratio during cold acclimation is regulated at the final step of the biosynthetic pathway.
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Affiliation(s)
- Keita Sutoh
- Crop Cold Tolerance Research Team, National Agricultural Research Center for Hokkaido Region (NARCH), National Agriculture and Food Research Organization, Hitsujigaoka 1, Toyohira-ku, Sapporo 062-8555, Japan
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