1
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Matsumoto H, Ueda M. Polarity establishment in the plant zygote at a glance. J Cell Sci 2024; 137:jcs261809. [PMID: 38436556 DOI: 10.1242/jcs.261809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
The complex structures of multicellular organisms originate from a unicellular zygote. In most angiosperms, including Arabidopsis thaliana, the zygote is distinctly polar and divides asymmetrically to produce an apical cell, which generates the aboveground part of the plant body, and a basal cell, which generates the root tip and extraembryonic suspensor. Thus, zygote polarity is pivotal for establishing the apical-basal axis running from the shoot apex to the root tip of the plant body. The molecular mechanisms and spatiotemporal dynamics behind zygote polarization remain elusive. However, advances in live-cell imaging of plant zygotes have recently made significant insights possible. In this Cell Science at a Glance article and the accompanying poster, we summarize our understanding of the early steps in apical-basal axis formation in Arabidopsis, with a focus on de novo transcriptional activation after fertilization and the intracellular dynamics leading to the first asymmetric division of the zygote.
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Affiliation(s)
- Hikari Matsumoto
- Graduate School of Life Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Sendai, 980-8578, Japan
| | - Minako Ueda
- Graduate School of Life Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Sendai, 980-8578, Japan
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2
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Kimata Y, Yamada M, Murata T, Kuwata K, Sato A, Suzuki T, Kurihara D, Hasebe M, Higashiyama T, Ueda M. Novel inhibitors of microtubule organization and phragmoplast formation in diverse plant species. Life Sci Alliance 2023; 6:e202201657. [PMID: 36849250 PMCID: PMC9971157 DOI: 10.26508/lsa.202201657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 03/01/2023] Open
Abstract
Cell division is essential for development and involves spindle assembly, chromosome separation, and cytokinesis. In plants, the genetic tools for controlling the events in cell division at the desired time are limited and ineffective owing to high redundancy and lethality. Therefore, we screened cell division-affecting compounds in Arabidopsis thaliana zygotes, whose cell division is traceable without time-lapse observations. We then determined the target events of the identified compounds using live-cell imaging of tobacco BY-2 cells. Subsequently, we isolated two compounds, PD-180970 and PP2, neither of which caused lethal damage. PD-180970 disrupted microtubule (MT) organization and, thus, nuclear separation, and PP2 blocked phragmoplast formation and impaired cytokinesis. Phosphoproteomic analysis showed that these compounds reduced the phosphorylation of diverse proteins, including MT-associated proteins (MAP70) and class II Kinesin-12. Moreover, these compounds were effective in multiple plant species, such as cucumber (Cucumis sativus) and moss (Physcomitrium patens). These properties make PD-180970 and PP2 useful tools for transiently controlling plant cell division at key manipulation nodes conserved across diverse plant species.
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Affiliation(s)
- Yusuke Kimata
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Moé Yamada
- Department of Biological Science, Division of Natural Science, Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Takashi Murata
- Department of Applied Bioscience, Kanagawa Institute of Technology, Atsugi, Japan
| | - Keiko Kuwata
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
| | - Ayato Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
| | - Takamasa Suzuki
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Japan
| | - Daisuke Kurihara
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
- Institute for Advanced Research (IAR), Nagoya University, Nagoya, Japan
| | - Mitsuyasu Hasebe
- National Institute for Basic Biology, Okazaki, Japan
- School of Life Science, The Graduate University for Advanced Studies, Okazaki, Japan
| | - Tetsuya Higashiyama
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Minako Ueda
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
- Suntory Rising Stars Encouragement Program in Life Sciences (SunRiSE), Kyoto, Japan
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3
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Nambo M, Maekawa Y, Crudden CM. Desulfonylative Transformations of Sulfones by Transition-Metal Catalysis, Photocatalysis, and Organocatalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05608] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan, 464-8602
| | - Yuuki Maekawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan, 464-8602
- Department of Chemistry, Queen’s University, Chernoff Hall, Kingston, Ontario, Canada, K7L 4 V1
| | - Cathleen M. Crudden
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan, 464-8602
- Department of Chemistry, Queen’s University, Chernoff Hall, Kingston, Ontario, Canada, K7L 4 V1
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Babu KN, Massarwe F, Shioukhi I, Masarwa A. Sequential Selective C-H and C(sp 3 )- + P Bond Functionalizations: An Entry to Bioactive Arylated Scaffolds. Angew Chem Int Ed Engl 2021; 60:26199-26209. [PMID: 34618394 DOI: 10.1002/anie.202111164] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Indexed: 12/14/2022]
Abstract
Organophosphonium salts containing C(sp3 )-+ P bonds are among the most utilized reagents in organic synthesis for constructing C-C double bonds. However, their use as C-selective electrophilic groups is rare. Here, we explore an efficient and general transition-metal-free method for sequential chemo- and regioselective C-H and C(sp3 )-+ P bond functionalizations. In the present study, C-H alkylation resulting in the synthesis of benzhydryl triarylphosphonium salts was achieved by one-pot, four-component cross-coupling reactions of simple and commercially available starting materials. The utility of the resulting phosphonium salt building blocks was demonstrated by the chemoselective post-functionalization of benzylic C(sp3 )-+ PPh3 groups to achieve aminations, thiolations, and arylations. In this way, benzhydrylamines, benzhydrylthioethers, and triarylmethanes, structural motifs that are present in many pharmaceuticals and agrochemicals, are readily accessed. These include the synthesis of two anticancer agents from simple materials in only two to three steps. Additionally, a protocol for late-stage functionalization of bioactive drugs has been developed using benzhydrylphosphonium salts. This new approach should provide novel transformations for application in both academic and pharmaceutical research.
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Affiliation(s)
- K Naresh Babu
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Fedaa Massarwe
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Israa Shioukhi
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Ahmad Masarwa
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
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5
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Babu KN, Massarwe F, Shioukhi I, Masarwa A. Sequential Selective C−H and C(sp
3
)−
+
P Bond Functionalizations: An Entry to Bioactive Arylated Scaffolds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K. Naresh Babu
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 9190401 Israel
| | - Fedaa Massarwe
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 9190401 Israel
| | - Israa Shioukhi
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 9190401 Israel
| | - Ahmad Masarwa
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 9190401 Israel
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6
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Matsumoto H, Kimata Y, Higaki T, Higashiyama T, Ueda M. Dynamic Rearrangement and Directional Migration of Tubular Vacuoles are Required for the Asymmetric Division of the Arabidopsis Zygote. PLANT & CELL PHYSIOLOGY 2021; 62:1280-1289. [PMID: 34077537 DOI: 10.1093/pcp/pcab075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/28/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
In most flowering plants, the asymmetric cell division of zygotes is the initial step that establishes the apical-basal axis. In the Arabidopsis zygote, vacuolar accumulation at the basal cell end is crucial to ensure zygotic division asymmetry. Despite the importance, it was unclear whether this polar vacuolar distribution was achieved by predominant biogenesis at the basal region or by directional movement after biogenesis. Here, we found that apical and basal vacuolar contents are dynamically exchanged via a tubular vacuolar network and the vacuoles gradually migrate toward the basal end. The mutant of a vacuolar membrane protein, SHOOT GRAVITROPISM2 (SGR2), failed to form tubular vacuoles, and the mutant of a putative vacuolar fusion factor, VESICLE TRANSPORT THROUGH INTERACTION WITH T-SOLUBLE N-ETHYLMALEIMIDE-SENSITIVE FUSION PROTEIN ATTACHMENT PROTEIN RECEPTORS (SNARES) 11 (VTI11), could not flexibly rearrange the vacuolar network. Both mutants failed to exchange the apical and basal vacuolar contents and to polarly migrate the vacuoles, resulting in a more symmetric division of zygotes. Additionally, we observed that in contrast to sgr2, the zygotic defects of vti11 were rescued by the pharmacological depletion of phosphatidylinositol 3-phosphate (PI3P), a distinct phospholipid in the vacuolar membrane. Thus, SGR2 and VTI11 have individual sites of action in zygotic vacuolar membrane processes. Further, a mutant of YODA (YDA) mitogen-activated protein kinase kinase kinase, a core component of the embryonic axis formation pathway, generated the proper vacuolar network; however, it failed to migrate the vacuoles toward the basal region, which suggests impaired directional cues. Overall, we conclude that SGR2- and VTI11-dependent vacuolar exchange and YDA-mediated directional migration are necessary to achieve polar vacuolar distribution in the zygote.
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Affiliation(s)
- Hikari Matsumoto
- Graduate School of Life Sciences, Tohoku University, 6-3 Aoba, Aoba-ku, Sendai 980-8578, Japan
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Yusuke Kimata
- Graduate School of Life Sciences, Tohoku University, 6-3 Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Takumi Higaki
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Kumamoto 860-8555, Japan
| | - Tetsuya Higashiyama
- Graduate School of Life Sciences, Tohoku University, 6-3 Aoba, Aoba-ku, Sendai 980-8578, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Minako Ueda
- Graduate School of Life Sciences, Tohoku University, 6-3 Aoba, Aoba-ku, Sendai 980-8578, Japan
- Suntory Rising Stars Encouragement Program in Life Sciences (SunRiSE)
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7
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Nambo M, Crudden CM. Transition Metal-Catalyzed Cross-Couplings of Benzylic Sulfone Derivatives. CHEM REC 2021; 21:3978-3989. [PMID: 34523788 DOI: 10.1002/tcr.202100210] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 12/25/2022]
Abstract
In recent years, the use of organosulfones as a new class of cross-coupling partner in transition-metal catalyzed reactions has undergone significant advancement. In this personal account, our recent investigations into desulfonylative cross-coupling reactions of benzylic sulfone derivatives catalyzed by Pd, Ni, and Cu catalysis is described. Combined with the facile α-functionalizations of sulfones, our methods can be used to form valuable multiply-arylated structures such as di-, tri-, and, tetraarylmethanes from readily available substrates. The reactivity of sulfones can be increased by introducing electron-withdrawing substituents such as 3,5-bis(trifluoromethyl)phenyl and trifluoromethyl groups, which enable more challenging cross-coupling reactions. Reactive intermediates including Cu-carbene complexes were identified as key intermediates in sulfone activation, representing new types of C-SO2 bond activation processes. These results indicate sulfones are powerful functional groups, enabling new catalytic desulfonylative transformations.
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Affiliation(s)
- Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-860, Japan
| | - Cathleen M Crudden
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-860, Japan.,Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario, K7L 3N6, Canada
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8
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Akhrem IS, Avetisyan DV, Afanas'eva LV, Artyushin OI. Simple and Efficient “One‐Pot” Synthesis of Diphenylaryl (Heteroaryl) Methanols from Benzene. ChemistrySelect 2020. [DOI: 10.1002/slct.201904255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Irena S. Akhrem
- Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences 28 Vavilov Street 119991 Moscow Russian Federation
| | - Dzhul'etta V. Avetisyan
- Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences 28 Vavilov Street 119991 Moscow Russian Federation
| | - Lyudmila V. Afanas'eva
- Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences 28 Vavilov Street 119991 Moscow Russian Federation
| | - Oleg I. Artyushin
- Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences 28 Vavilov Street 119991 Moscow Russian Federation
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9
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Ricco C, Abdmouleh F, Riccobono C, Guenineche L, Martin F, Goya-Jorge E, Lagarde N, Liagre B, Ali MB, Ferroud C, Arbi ME, Veitía MSI. Pegylated triarylmethanes: Synthesis, antimicrobial activity, anti-proliferative behavior and in silico studies. Bioorg Chem 2020; 96:103591. [PMID: 32004896 DOI: 10.1016/j.bioorg.2020.103591] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/10/2020] [Accepted: 01/17/2020] [Indexed: 12/13/2022]
Abstract
We describe herein the synthesis, characterization and biological studies of novel PEGylated triarylmethanes. Non-symmetrical and symmetrical triarylmethanes series have been synthesized by Friedel-Crafts hydroxyalkylation or directly from bisacodyl respectively followed by a functionalization with PEG fragments in order to increase bioavailability and biological effectiveness. The antimicrobial activity was investigated against Gram-positive and Gram-negative foodborne pathogens and against Candida albicans, an opportunistic pathogenic yeast. The anti-biocidal activity was also studied using Staphylococcus aureus as a reference bacterium. Almost all PEGylated molecules displayed an antifungal activity comparable with fusidic acid with MIC values ranging from 6.25 to 50 μg/mL. Compounds also revealed a promising antibiofilm activity with biofilm eradication percentages values above 80% for the best molecules (compounds 4d and 7). Compounds 7 and 8b showed a modest antiproliferative activity against human colorectal cancer cell lines HT-29. Finally, in silico molecular docking studies revealed DHFR and DNA gyrase B as potential anti-bacterial targets and in silico predictions of ADME suggested adequate drug-likeness profiles for the synthetized triarylmethanes.
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Affiliation(s)
- Christophe Ricco
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France
| | - Fatma Abdmouleh
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France; Laboratoire de Biotechnologie Microbienne et d'Ingénierie des Enzymes (LBMIE). Centre de Biotechnologie de Sfax, Université de Sfax, Route de Sidi Mansour Km 6, BP 1177, 3018 Sfax, Tunisia
| | - Charlotte Riccobono
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France
| | - Léna Guenineche
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France
| | - Frédérique Martin
- Laboratoire PEIRENE, EA 7500, Département de Biochimie et de Biologie Moléculaire. Faculté de Pharmacie, Université de Limoges, 2, Rue du Dr Marcland, 87025 Limoges, CEDEX, France
| | - Elizabeth Goya-Jorge
- ProtoQSAR SL. CEEI (Centro Europeo de Empresas Innovadoras), Parque Tecnológico de Valencia, Av. Benjamin Franklin 12, 46980 Paterna, Valencia, Spain
| | - Nathalie Lagarde
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France
| | - Bertrand Liagre
- Laboratoire PEIRENE, EA 7500, Département de Biochimie et de Biologie Moléculaire. Faculté de Pharmacie, Université de Limoges, 2, Rue du Dr Marcland, 87025 Limoges, CEDEX, France
| | - Mamdouh Ben Ali
- Laboratoire de Biotechnologie Microbienne et d'Ingénierie des Enzymes (LBMIE). Centre de Biotechnologie de Sfax, Université de Sfax, Route de Sidi Mansour Km 6, BP 1177, 3018 Sfax, Tunisia
| | - Clotilde Ferroud
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France
| | - Mehdi El Arbi
- Laboratoire de Biotechnologie Microbienne et d'Ingénierie des Enzymes (LBMIE). Centre de Biotechnologie de Sfax, Université de Sfax, Route de Sidi Mansour Km 6, BP 1177, 3018 Sfax, Tunisia
| | - Maité Sylla-Iyarreta Veitía
- Equipe de Chimie Moléculaire du Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 Rue Conté, HESAM Université, 75003 Paris, France.
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10
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Ueda M, Kimata Y, Kurihara D. Live-Cell Imaging of Zygotic Intracellular Structures and Early Embryo Pattern Formation in Arabidopsis thaliana. Methods Mol Biol 2020; 2122:37-47. [PMID: 31975294 DOI: 10.1007/978-1-0716-0342-0_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Plant embryogenesis begins with fertilization and ends with the generation of the basic body plan of the future plant. Despite its importance, the dynamics of flowering plant ontogeny have long been a mystery, because the embryo develops deep in the maternal tissue. Recently, an embryonic live-cell imaging system was established in Arabidopsis thaliana by developing an in vitro ovule cultivation method and utilizing two-photon excitation microscopy (2PEM), which is suitable for deep imaging. This system enabled us to visualize intracellular dynamics during zygote polarization and monitor the cell division pattern during embryogenesis from the zygote until organ formation. In this chapter, we describe a method that allows for high-resolution imaging of cytoskeletal rearrangements in the zygote and long-term tracing of embryo patterning.
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Affiliation(s)
- Minako Ueda
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan.
- Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Nagoya, Japan.
| | - Yusuke Kimata
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Daisuke Kurihara
- Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Nagoya, Japan.
- JST, PRESTO, Nagoya, Japan.
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An M, Zhao X, Zhou T, Wang G, Xia Z, Wu Y. A Novel Biological Agent Cytosinpeptidemycin Inhibited the Pathogenesis of Tobacco Mosaic Virus by Inducing Host Resistance and Stress Response. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7738-7747. [PMID: 31199650 DOI: 10.1021/acs.jafc.9b02662] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cytosinpeptidemycin (CytPM) is a microbial pesticide that displayed broad-spectrum antiviral activity against various plant viruses. However, the molecular mechanism underlying antiviral activity of CytPM is poorly understood. In this study, the results demonstrated that CytPM could effectively delay the systemic infection of tobacco mosaic virus (TMV) in Nicotiana benthamiana and significantly inhibit the viral accumulation in tobacco BY-2 protoplasts. Results of RNA-seq indicated that 210 and 120 differential expressed genes (DEGs) were significantly up- and down-regulated after CytPM treatment in BY-2 protoplasts, respectively. In addition, KEGG analysis indicated that various DEGs were involved in endoplasmic reticulum (ER) protein processing, suggesting a possible correlation between ER homeostasis and virus resistance. RT-qPCR was performed to validate the gene expression of crucial DEGs related with defense, stress responses, signaling transduction, and phytohormone, which were consistent with results of RNA-seq. Our works provided valuable insights into the antiviral mechanism of CytPM that induced host resistance to viral infection.
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Affiliation(s)
- Mengnan An
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
| | - Xiuxiang Zhao
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
| | - Tao Zhou
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
| | - Guanzhong Wang
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
| | - Zihao Xia
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
| | - Yuanhua Wu
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , China
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12
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Mondal A, Kundu P, Jash M, Chowdhury C. Palladium-catalysed stereoselective synthesis of 4-(diarylmethylidene)-3,4-dihydroisoquinolin-1(2H)-ones: expedient access to 4-substituted isoquinolin-1(2H)-ones and isoquinolines. Org Biomol Chem 2018; 16:963-980. [DOI: 10.1039/c7ob02788e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Palladium-catalysed stereoselective synthesis of 4-(diarylmethylidene)-3,4-dihydroisoquinolin-1(2H)-ones and their straightforward transformations to 4-substituted isoquinolin-1(2H)-ones and isoquinolines are described.
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Affiliation(s)
- Amrita Mondal
- Organic and Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR)
- Kolkata-700032
- India
| | - Priyanka Kundu
- Organic and Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR)
- Kolkata-700032
- India
| | - Moumita Jash
- Organic and Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR)
- Kolkata-700032
- India
| | - Chinmay Chowdhury
- Organic and Medicinal Chemistry Division
- Indian Institute of Chemical Biology (CSIR)
- Kolkata-700032
- India
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13
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Ohsumi M, Ito A, Nishiwaki N. Substrate switchable Suzuki–Miyaura coupling for benzyl ester vs. benzyl halide. RSC Adv 2018; 8:35056-35061. [PMID: 35547057 PMCID: PMC9087645 DOI: 10.1039/c8ra07841f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 10/08/2018] [Indexed: 11/21/2022] Open
Abstract
Two reaction conditions were developed to accomplish the substrate switchable (benzyl esters vs. benzyl halides) Suzuki–Miyaura coupling.
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Affiliation(s)
- Masato Ohsumi
- Kochi National College of Technology
- Nankoku
- Japan
- School of Environmental Science and Engineering
- Kochi University of Technology
| | - Akitaka Ito
- School of Environmental Science and Engineering
- Kochi University of Technology
- Kami
- Japan
- Research Center for Material Science and Engineering
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering
- Kochi University of Technology
- Kami
- Japan
- Research Center for Material Science and Engineering
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14
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Ohsumi M, Nishiwaki N. Selective Synthesis of (Benzyl)biphenyls by Successive Suzuki-Miyaura Coupling of Phenylboronic Acids with 4-Bromobenzyl Acetate under Air Atmosphere. ACS OMEGA 2017; 2:7767-7771. [PMID: 31457333 PMCID: PMC6645156 DOI: 10.1021/acsomega.7b01450] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 10/26/2017] [Indexed: 05/24/2023]
Abstract
An efficient Pd-catalyzed cross-coupling reaction of phenylboronic acids and benzyl carbonates was developed, producing diarylmethanes. Benzyl acetates could also be used as coupling partners instead of benzyl carbonates, affording diarylmethanes in comparable yields. This reaction can be conducted under air atmosphere without any care for moisture and oxygen. The ester function showed an intermediate reactivity between chloro and bromo groups. This property facilitated the selective synthesis of diverse (benzyl)biphenyls by successive Suzuki-Miyaura coupling reactions using bromo- and chloro-substituted benzyl esters with two types of boronic acids.
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Affiliation(s)
- Masato Ohsumi
- Kochi
National College of Technology, Nankoku, Kochi 783-8508, Japan
| | - Nagatoshi Nishiwaki
- School
of Environmental Science and Engineering and Research Center for Material Science
and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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15
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Kurihara D, Kimata Y, Higashiyama T, Ueda M. In Vitro Ovule Cultivation for Live-cell Imaging of Zygote Polarization and Embryo Patterning in Arabidopsis thaliana. J Vis Exp 2017. [PMID: 28930998 DOI: 10.3791/55975] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
In most flowering plants, the zygote and embryo are hidden deep in the mother tissue, and thus it has long been a mystery of how they develop dynamically; for example, how the zygote polarizes to establish the body axis and how the embryo specifies various cell fates during organ formation. This manuscript describes an in vitro ovule culture method to perform live-cell imaging of developing zygotes and embryos of Arabidopsis thaliana. The optimized cultivation medium allows zygotes or early embryos to grow into fertile plants. By combining it with a poly(dimethylsiloxane) (PDMS) micropillar array device, the ovule is held in the liquid medium in the same position. This fixation is crucial to observe the same ovule under a microscope for several days from the zygotic division to the late embryo stage. The resulting live-cell imaging can be used to monitor the real-time dynamics of zygote polarization, such as nuclear migration and cytoskeleton rearrangement, and also the cell division timing and cell fate specification during embryo patterning. Furthermore, this ovule cultivation system can be combined with inhibitor treatments to analyze the effects of various factors on embryo development, and with optical manipulations such as laser disruption to examine the role of cell-cell communication.
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Affiliation(s)
- Daisuke Kurihara
- Division of Biological Science, Graduate School of Science, Nagoya University; Higashiyama Live-Holonics Project, JST-ERATO, Nagoya University;
| | - Yusuke Kimata
- Division of Biological Science, Graduate School of Science, Nagoya University
| | - Tetsuya Higashiyama
- Division of Biological Science, Graduate School of Science, Nagoya University; Higashiyama Live-Holonics Project, JST-ERATO, Nagoya University; Institute of Transformative Bio-Molecules (ITbM), Nagoya University
| | - Minako Ueda
- Division of Biological Science, Graduate School of Science, Nagoya University; Institute of Transformative Bio-Molecules (ITbM), Nagoya University;
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