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da Silva MF, de Lima LVA, de Oliveira LM, Semprebon SC, Silva NDO, de Aguiar AP, Mantovani MS. Regulation of cytokinesis and necroptosis pathways by diosgenin inhibits the proliferation of NCI-H460 lung cancer cells. Life Sci 2023; 330:122033. [PMID: 37598976 DOI: 10.1016/j.lfs.2023.122033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/09/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Aim Overcoming resistance to apoptosis and antimitotic chemotherapy is crucial for effective treatment of lung cancer. Diosgenin (DG), a promising phytochemical, can regulate various molecular pathways implicated in tumor formation and progression. However, the precise biological activity of DG in lung cancer remains unclear. This study aimed to investigate the antiproliferative activity of DG in NCI-H460 lung carcinoma cells to explore the underlying antimitotic mechanisms and alternative cell death pathways. MATERIALS AND METHODS In a 2D culture system, we analyzed cell viability, multinucleated cell frequency, cell concentration, cell cycle changes, cell death induction, intracellular reactive oxygen species (ROS) production, and nuclear DNA damage, particularly in relation to target gene expression. We also evaluated the antiproliferative activity of DG in a 3D culture system of spheroids, assessing volume changes, cell death induction, and inhibition of proliferation recovery and clonogenic growth. KEY FINDINGS DG reduced cell viability and concentration while increasing the frequency of cells with multiple nuclei, particularly binucleated cells resulting from daughter cell fusion. This effect was associated with genes involved in cytokinesis regulation (RAB35, OCRL, BIRC5, and AURKB). Additionally, DG-induced cell death was linked to necroptosis, as evidenced by increased intracellular ROS production and RIPK3, MLKL, TRAF2, and HSPA5 gene expression. In tumor spheroids, DG increased spheroid volume, induced cell death, and inhibited proliferation recovery and clonogenic growth. SIGNIFICANCE Our study provides new insights into the biological activities of DG in lung cancer cells, contributing to the development of novel oncological therapies.
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Taneja N, Baillargeon SM, Burnette DT. Myosin light chain kinase-driven myosin II turnover regulates actin cortex contractility during mitosis. Mol Biol Cell 2021; 32:br3. [PMID: 34319762 PMCID: PMC8684764 DOI: 10.1091/mbc.e20-09-0608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 07/02/2021] [Accepted: 07/19/2021] [Indexed: 11/11/2022] Open
Abstract
Force generation by the molecular motor myosin II (MII) at the actin cortex is a universal feature of animal cells. Despite its central role in driving cell shape changes, the mechanisms underlying MII regulation at the actin cortex remain incompletely understood. Here we show that myosin light chain kinase (MLCK) promotes MII turnover at the mitotic cortex. Inhibition of MLCK resulted in an alteration of the relative levels of phosphorylated regulatory light chain (RLC), with MLCK preferentially creating a short-lived pRLC species and Rho-associated kinase (ROCK) preferentially creating a stable ppRLC species during metaphase. Slower turnover of MII and altered RLC homeostasis on MLCK inhibition correlated with increased cortex tension, driving increased membrane bleb initiation and growth, but reduced bleb retraction during mitosis. Taken together, we show that ROCK and MLCK play distinct roles at the actin cortex during mitosis; ROCK activity is required for recruitment of MII to the cortex, while MLCK activity promotes MII turnover. Our findings support the growing evidence that MII turnover is an essential dynamic process influencing the mechanical output of the actin cortex.
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Affiliation(s)
- Nilay Taneja
- Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37212
| | - Sophie M. Baillargeon
- Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37212
| | - Dylan T. Burnette
- Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37212
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Cao L, Wang Z, Zhang D, Li X, Hou C, Ren C. Phosphorylation of myosin regulatory light chain at Ser17 regulates actomyosin dissociation. Food Chem 2021; 356:129655. [PMID: 33831832 DOI: 10.1016/j.foodchem.2021.129655] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/07/2021] [Accepted: 03/16/2021] [Indexed: 11/19/2022]
Abstract
Phosphorylation of myosin regulatory light chain (MRLC) can regulate muscle contraction and thus affect actomyosin dissociation and meat quality. The objective of this study was to explore the mechanism by how MRLC phosphorylation regulates actomyosin dissociation and thus develop strategies for improving meat quality. Here, the phosphorylation status of MRLC was modulated by myosin light chain kinase and myosin light chain kinase inhibitor. MRLC phosphorylation at Ser17 decreased the kinetic energy and total energy of actomyosin, thus stabilized the structure, facilitating the interaction between myosin and actin; this was one possible way that MRLC phosphorylation at Ser17 negatively affects actomyosin dissociation. Moreover, MRLC phosphorylation at Ser17 was beneficial to the formation of ionic bonds, hydrogen bonds, and hydrophobic interaction between myosin and actin, and was the second possible way that MRLC phosphorylation at Ser17 negatively affects actomyosin dissociation.
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Affiliation(s)
- Lichuang Cao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China; Department of Food Science, Faculty of Science, University of Copenhagen, 1958 Frederiksberg C, Denmark.
| | - Zhenyu Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China.
| | - Dequan Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China.
| | - Xin Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China
| | - Chengli Hou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China
| | - Chi Ren
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China
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Wang K, Okada H, Bi E. Comparative Analysis of the Roles of Non-muscle Myosin-IIs in Cytokinesis in Budding Yeast, Fission Yeast, and Mammalian Cells. Front Cell Dev Biol 2020; 8:593400. [PMID: 33330476 PMCID: PMC7710916 DOI: 10.3389/fcell.2020.593400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/30/2020] [Indexed: 12/31/2022] Open
Abstract
The contractile ring, which plays critical roles in cytokinesis in fungal and animal cells, has fascinated biologists for decades. However, the basic question of how the non-muscle myosin-II and actin filaments are assembled into a ring structure to drive cytokinesis remains poorly understood. It is even more mysterious why and how the budding yeast Saccharomyces cerevisiae, the fission yeast Schizosaccharomyces pombe, and humans construct the ring structure with one, two, and three myosin-II isoforms, respectively. Here, we provide a comparative analysis of the roles of the non-muscle myosin-IIs in cytokinesis in these three model systems, with the goal of defining the common and unique features and highlighting the major questions regarding this family of proteins.
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Affiliation(s)
- Kangji Wang
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Hiroki Okada
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Erfei Bi
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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5
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Hamao K, Ono T, Matsushita M, Hosoya H. ZIP kinase phosphorylated and activated by Rho kinase/ROCK contributes to cytokinesis in mammalian cultured cells. Exp Cell Res 2019; 386:111707. [PMID: 31693874 DOI: 10.1016/j.yexcr.2019.111707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 11/29/2022]
Abstract
Cytokinesis of animal cells requires contraction of a contractile ring, composed of actin filaments and myosin II filaments. Phosphorylation of myosin II regulatory light chain (MRLC) promotes contraction of the actomyosin ring by activating myosin II motor activity. Both Rho-associated coiled-coil kinase (Rho kinase/ROCK) and Zipper-interacting protein kinase (ZIP kinase/ZIPK) have been reported to phosphorylate MRLC at the contractile ring. However, it remains unclear whether these kinases function independently of each other. Here, we clarified that ROCK colocalizes and forms a complex with ZIPK at telophase. As ROCK is reported to phosphorylate and activate ZIPK in vitro, we hypothesized that ZIPK phosphorylated by ROCK contributes to control cytokinesis. To address this, we expressed EGFP-ZIPK wild type (WT), a non-phosphorylatable mutant (T265A) or a phosphorylation-mimicking mutant (T265D) in HeLa cells and treated these cells with a ROCK inhibitor. Decrease in phosphorylated MRLC and a delay of furrow ingression by the ROCK inhibitor were rescued by the expression of EGFP-ZIPK-T265D, but not EGFP-ZIPK-WT or -T265A. This suggests that ROCK regulates MRLC phosphorylation followed by furrow ingression, through ZIPK phosphorylation.
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Affiliation(s)
- Kozue Hamao
- Program of Basic Biology, Graduate School of Integrated Science for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan; Program of Biomedical Science, Graduate School of Integrated Science for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan; Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Hiratsuka, Hiroshima, 739-8526, Japan.
| | - Taichiro Ono
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Hiratsuka, Hiroshima, 739-8526, Japan
| | - Masaya Matsushita
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Hiratsuka, Hiroshima, 739-8526, Japan
| | - Hiroshi Hosoya
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Hiratsuka, Hiroshima, 739-8526, Japan
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Berry L, Chen CT, Francia ME, Guerin A, Graindorge A, Saliou JM, Grandmougin M, Wein S, Bechara C, Morlon-Guyot J, Bordat Y, Gubbels MJ, Lebrun M, Dubremetz JF, Daher W. Toxoplasma gondii chromosomal passenger complex is essential for the organization of a functional mitotic spindle: a prerequisite for productive endodyogeny. Cell Mol Life Sci 2018; 75:4417-4443. [PMID: 30051161 PMCID: PMC6260807 DOI: 10.1007/s00018-018-2889-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/28/2018] [Accepted: 07/23/2018] [Indexed: 12/20/2022]
Abstract
The phylum Apicomplexa encompasses deadly pathogens such as malaria and Cryptosporidium. Apicomplexa cell division is mechanistically divergent from that of their mammalian host, potentially representing an attractive source of drug targets. Depending on the species, apicomplexan parasites can modulate the output of cell division, producing two to thousands of daughter cells at once. The inherent flexibility of their cell division mechanisms allows these parasites to adapt to different niches, facilitating their dissemination. Toxoplasma gondii tachyzoites divide using a unique form of cell division called endodyogeny. This process involves a single round of DNA replication, closed nuclear mitosis, and assembly of two daughter cells within a mother. In higher Eukaryotes, the four-subunit chromosomal passenger complex (CPC) (Aurora kinase B (ARKB)/INCENP/Borealin/Survivin) promotes chromosome bi-orientation by detaching incorrect kinetochore-microtubule attachments, playing an essential role in controlling cell division fidelity. Herein, we report the characterization of the Toxoplasma CPC (Aurora kinase 1 (Ark1)/INCENP1/INCENP2). We show that the CPC exhibits dynamic localization in a cell cycle-dependent manner. TgArk1 interacts with both TgINCENPs, with TgINCENP2 being essential for its translocation to the nucleus. While TgINCENP1 appears to be dispensable, interfering with TgArk1 or TgINCENP2 results in pronounced division and growth defects. Significant anti-cancer drug development efforts have focused on targeting human ARKB. Parasite treatment with low doses of hesperadin, a known inhibitor of human ARKB at higher concentrations, phenocopies the TgArk1 and TgINCENP2 mutants. Overall, our study provides new insights into the mechanisms underpinning cell cycle control in Apicomplexa, and highlights TgArk1 as potential drug target.
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Affiliation(s)
- Laurence Berry
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Chun-Ti Chen
- Department of Biology, Boston College, Chestnut Hill, MA, 02467, USA
| | - Maria E Francia
- Molecular Biology Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Amandine Guerin
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800, Spruce Street, Philadelphia, PA, 19104, USA
| | - Arnault Graindorge
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Jean-Michel Saliou
- CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019, UMR 8204, CIIL-Centre d'Infection et d'Immunité de Lille, University of Lille, 59000, Lille, France
| | - Maurane Grandmougin
- CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019, UMR 8204, CIIL-Centre d'Infection et d'Immunité de Lille, University of Lille, 59000, Lille, France
| | - Sharon Wein
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Chérine Bechara
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
- Institut de Génomique Fonctionnelle, CNRS, UMR5230 INSERM U1191, University of Montpellier, 34094, Montpellier, France
| | - Juliette Morlon-Guyot
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Yann Bordat
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Marc-Jan Gubbels
- Department of Biology, Boston College, Chestnut Hill, MA, 02467, USA
| | - Maryse Lebrun
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Jean-François Dubremetz
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Wassim Daher
- Dynamique des Interactions Membranaires Normales et Pathologiques, UMR5235 CNRS, INSERM, Université de Montpellier, Montpellier, France.
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Bornschein J, Nielitz J, Drozdov I, Selgrad M, Wex T, Jechorek D, Link A, Vieth M, Malfertheiner P. Expression of aurora kinase A correlates with the Wnt-modulator RACGAP1 in gastric cancer. Cancer Med 2016; 5:516-26. [PMID: 26778597 PMCID: PMC4799948 DOI: 10.1002/cam4.610] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 11/19/2015] [Accepted: 11/19/2015] [Indexed: 12/22/2022] Open
Abstract
Canonical Wnt signaling is involved in gastric carcinogenesis. The aim of this study was to identify the link between Wnt signaling and aurora kinase A (AURKA), a target for the treatment of gastrointestinal cancers. Publicly available microarray data were used to identify phenotype‐specific protein–protein interaction (PPI) subnetworks. The in silico analysis revealed a gastric cancer‐specific PPI subnetwork consisting of 2745 proteins and 50,935 interactions. We focused on the link of AURKA to a Wnt‐specific interaction module consisting of 92 proteins. There was a direct association of AURKA with Rac GTPase‐activating protein 1 (RACGAP1), as well as with CTNBB1 (β‐catenin) and CDKN1A as second‐order interactors. Differential expression analysis revealed a significant downregulation of both AURKA and RACGAP1 in gastric cancer compared to noncancer controls. Biopsies from a prospective cohort of 56 patients with gastric cancer (32 intestinal type, 24 diffuse type) and 20 noncancer controls were used for validation of the identified targets. The RT‐PCR data confirmed a strong correlation of AURKA and RACGAP1 gene expression both in the tumor, the tumor‐adjacent and the tumor‐distant mucosa. RACGAP1 in the tumor was also associated with CTNBB1 expression, and inversely associated with CDKN1A gene expression. Immunohistochemistry confirmed expression of the RACGAP1 protein in gastric cancer and the tumor‐adjacent mucosa. RACGAP1 expression was not associated with tumor stage, grading, Lauren type, Helicobacter pylori infection, or age. In conclusion, AURKA is directly associated with the expression of RACGAP1, a modulator of the canonical Wnt signaling pathway.
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Affiliation(s)
- Jan Bornschein
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Jessica Nielitz
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Ignat Drozdov
- Department of Computational Biology, Bering Limited, 80 Third Cross Road, Twickenham, TW2 5EA, United Kingdom
| | - Michael Selgrad
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Thomas Wex
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany.,Department of Molecular Genetics, Medical Laboratory for Clinical Chemistry, Microbiology and Infectious Diseases, Am Neustädter Feld 47, 39124, Magdeburg, Germany
| | - Doerthe Jechorek
- Institute of Pathology, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Alexander Link
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Michael Vieth
- Institute of Pathology, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany.,Institute of Pathology, Klinikum Bayreuth GmbH, Preuschwitzer Str. 101, 95445, Bayreuth, Germany
| | - Peter Malfertheiner
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
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Kondo T, Okada M, Kunihiro K, Takahashi M, Yaoita Y, Hosoya H, Hamao K. Characterization of myosin II regulatory light chain isoforms in HeLa cells. Cytoskeleton (Hoboken) 2016; 72:609-20. [DOI: 10.1002/cm.21268] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 11/27/2015] [Accepted: 12/07/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Tomo Kondo
- Department of Biological Science; Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
| | - Morihiro Okada
- Division of Embryology and Genetics; Institute for Amphibian Biology, Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
| | - Kayo Kunihiro
- Department of Biological Science; Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
| | - Masayuki Takahashi
- Department of Chemistry; Faculty of Science, Hokkaido University; Sapporo 010-0810 Japan
| | - Yoshio Yaoita
- Division of Embryology and Genetics; Institute for Amphibian Biology, Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
| | - Hiroshi Hosoya
- Department of Biological Science; Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
| | - Kozue Hamao
- Department of Biological Science; Graduate School of Science, Hiroshima University; Higashihiroshima 739-8526 Japan
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