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Kobayashi M, Yamaguchi S, Kusano S, Kumagai S, Ito T. Non-thermal atmospheric-pressure plasma exposure as a practical method for improvement of Brassica juncea seed germination. J Biotechnol 2024; 392:103-108. [PMID: 38944385 DOI: 10.1016/j.jbiotec.2024.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/01/2024]
Abstract
Here we report that non-thermal atmospheric-pressure plasma exposure can improve Brassica juncea (leaf mustard) seed germination rate from 50 % to 98 %. The commercially relevant germination rate was achieved by plasma exposure for only 10 minutes and the effect sustains at least for one month under an appropriate storage condition. Improved germination by plasma exposure was also observed for Brassica rapa subsp. pekinensis (Chinese cabbage) seeds. The plasma device used is simple. No pure gas flow system is necessary and it is easy to handle. A large number of seeds can be treated by simply scaling up the device. Plasma exposure can be a practical method for improving seed germination of crop plants important for agriculture.
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Affiliation(s)
- Mime Kobayashi
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan; Department of Physics, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-8686, Japan.
| | - Sho Yamaguchi
- Takii & Company, Limited, Shimogyo-ku, Kyoto 600-8243, Japan
| | - Shintaro Kusano
- Takii & Company, Limited, Shimogyo-ku, Kyoto 600-8243, Japan
| | - Shinya Kumagai
- Department of Electrical and Electronic Engineering, Meijo University, Tempaku-ku, Nagoya 468-8502, Japan
| | - Toshiro Ito
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
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2
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Xu M, Fukuyama Y, Nakai K, Liu Z, Sumiya Y, Okino A. Characteristics of Double-Layer, Large-Flow Dielectric Barrier Discharge Plasma Source for Toluene Decomposition. PLASMA 2023. [DOI: 10.3390/plasma6020016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
The direct decomposition of toluene-containing humidified air at large flow rates was studied in two types of reactors with dielectric barrier discharge (DBD) features in ambient conditions. A scalable large-flow DBD reactor (single-layer reactor) was designed to verify the feasibility of large-flow plasma generation and evaluate its decomposition characteristics with toluene-containing humidified air, which have not been investigated. In addition, another large-flow DBD reactor with a multilayer structure (two-layer reactor) was developed as an upscale version of the single-layer reactor, and the scalability and superiority of the features of the multilayer structure were validated by comparing the decomposition characteristics of the two reactors. Consequently, the large-flow DBD reactor showed similar decomposition characteristics to those of the small-flow DBD reactor regarding applied voltage, flow velocity, flow rate, and discharge length, thus justifying the feasibility of large-flow plasma generation. Additionally, the two-layer reactor is more effective than the single-layer reactor, suggesting multilayer configuration is a viable scheme for further upscaled DBD systems. A high decomposition rate of 59.5% was achieved at the considerably large flow rate of 110 L/min. The results provide fundamental data and present guidelines for the implementation of the DBD plasma-based system as a solution for volatile organic compound abatement.
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Affiliation(s)
- Mao Xu
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - Yohei Fukuyama
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - Kazuki Nakai
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - Zhizhi Liu
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - Yuki Sumiya
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
| | - Akitoshi Okino
- Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
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3
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Yanagawa Y, Suenaga Y, Iijima Y, Endo M, Sanada N, Katoh E, Toki S, Okino A, Mitsuhara I. Genome editing by introduction of Cas9/sgRNA into plant cells using temperature-controlled atmospheric pressure plasma. PLoS One 2023; 18:e0281767. [PMID: 36795787 PMCID: PMC9934431 DOI: 10.1371/journal.pone.0281767] [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: 07/29/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
Previously, we developed a technique to introduce a superfolder green fluorescent protein (sGFP) fusion protein directly into plant cells using atmospheric-pressure plasma. In this study, we attempted genome editing using CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR associated protein 9) system using this protein introduction technique. As an experimental system to evaluate genome editing, we utilized transgenic reporter plants carrying the reporter genes L-(I-SceI)-UC and sGFP-waxy-HPT. The L-(I-SceI)-UC system allowed the detection of successful genome editing by measuring the chemiluminescent signal observed upon re-functionalization of the luciferase (LUC) gene following genome editing. Similarly, the sGFP-waxy-HPT system conferred hygromycin resistance caused by hygromycin phosphotransferase (HPT) during genome editing. CRISPR/Cas9 ribonucleoproteins targeting these reporter genes were directly introduced into rice calli or tobacco leaf pieces after treatment with N2 and/or CO2 plasma. Cultivation of the treated rice calli on a suitable medium plate produced the luminescence signal, which was not observed in the negative control. Four types of genome-edited sequences were obtained upon sequencing the reporter genes of genome-edited candidate calli. sGFP-waxy-HPT-carrying tobacco cells exhibited hygromycin resistance during genome editing. After repeated cultivation of the treated tobacco leaf pieces on a regeneration medium plate, the calli were observed with leaf pieces. A green callus that was hygromycin-resistant was harvested, and a genome-edited sequence in the tobacco reporter gene was confirmed. As direct introduction of the Cas9/sgRNA (single guide RNA) complex using plasma enables genome editing in plants without any DNA introduction, this method is expected to be optimized for many plant species and may be widely applied for plant breeding in the future.
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Affiliation(s)
- Yuki Yanagawa
- Graduate School of Horticulture, Chiba University, Matsudo, Chiba, Japan
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
- * E-mail: , (YY); (IM)
| | - Yuma Suenaga
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Yusuke Iijima
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Masaki Endo
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Naoko Sanada
- Advanced Analysis Center, NARO, Tsukuba, Ibaraki, Japan
| | - Etsuko Katoh
- Advanced Analysis Center, NARO, Tsukuba, Ibaraki, Japan
- Faculty of Food and Nutritional Science, Toyo University, Ora-gun, Gunma, Japan
| | - Seiichi Toki
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, Japan
- Faculty of Agriculture, Ryukoku University, Otsu, Shiga, Japan
| | - Akitoshi Okino
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Ichiro Mitsuhara
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
- * E-mail: , (YY); (IM)
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Kobayashi M, Tomoda K, Morihara H, Asahi M, Shimizu T, Kumagai S. Non-thermal atmospheric-pressure plasma potentiates mesodermal differentiation of human induced pluripotent stem cells. Heliyon 2022; 8:e12009. [PMID: 36506411 PMCID: PMC9727642 DOI: 10.1016/j.heliyon.2022.e12009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/08/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Non-thermal atmospheric-pressure plasma has been used for biological applications, including sterilization and stimulation of cell growth and differentiation. Here, we demonstrate that plasma exposure influences the differentiation pattern of human induced pluripotent stem cells (hiPSCs). We treated hiPSCs with dielectric barrier-discharge air plasma and found an exposure dose that does not kill hiPSCs. Immunohistochemical staining for E-CADHERIN showed that the exposure affected cell-cell attachment and doubled the average size of the hiPSCs. Analysis of mRNAs in embryoid bodies (EBs) from plasma-treated hiPSCs revealed repression of ectoderm genes, including WNT1, and increased expression of mesoderm genes. Importantly, hiPSCs deficient in DNA repair only displayed minimal damage after plasma exposure. Collectively, our results suggest that plasma treatment can be another tool for directing the fate of pluripotent stem cells without disrupting their genomic integrity.
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Affiliation(s)
- Mime Kobayashi
- Division of Biological Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan,Department of Pharmacology, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan,Corresponding author.
| | - Kiichiro Tomoda
- Department of Pharmacology, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan,Gladstone Institute of Cardiovascular Disease, San Francisco, CA 94158, USA,Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hirofumi Morihara
- Department of Pharmacology, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Michio Asahi
- Department of Pharmacology, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Tetsuji Shimizu
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8560, Japan
| | - Shinya Kumagai
- Department of Electrical and Electronic Engineering, Meijo University, 1-501 Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan
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5
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Aiba W, Amai T, Ueda M, Kuroda K. Improving Precise Genome Editing Using Donor DNA/gRNA Hybrid Duplex Generated by Complementary Bases. Biomolecules 2022; 12:1621. [PMID: 36358971 PMCID: PMC9687273 DOI: 10.3390/biom12111621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/19/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
In precise genome editing, site-specific DNA double-strand breaks (DSBs) induced by the CRISPR/Cas9 system are repaired via homology-directed repair (HDR) using exogenous donor DNA templates. However, the low efficiency of HDR-mediated genome editing is a barrier to widespread use. In this study, we created a donor DNA/guide RNA (gRNA) hybrid duplex (DGybrid) that was composed of sequence-extended gRNA and single-stranded oligodeoxynucleotide (ssODN) combined with complementary bases without chemical modifications to increase the concentration of donor DNA at the cleavage site. The efficiency of genome editing using DGybrid was evaluated in Saccharomyces cerevisiae. The results show a 1.8-fold (from 35% to 62%) improvement in HDR-mediated editing efficiency compared to genome editing in which gRNA and donor DNA were introduced separately. In addition, analysis of the nucleic acid introduction efficiency using flow cytometry indicated that both RNA and ssODNs are efficiently incorporated into cells together by using the DNA/RNA hybrid. Our technique would be preferred as a universal and concise tool for improving the efficiency of HDR-mediated genome editing.
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Affiliation(s)
| | | | | | - Kouichi Kuroda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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6
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IWAI T. Development of Highly Sensitive Inorganic/Organic Analytical Systems for Ultrasmall Samples Using Atmospheric Pressure Plasmas. BUNSEKI KAGAKU 2022. [DOI: 10.2116/bunsekikagaku.71.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Cell-penetrating peptide for targeted macromolecule delivery into plant chloroplasts. Appl Microbiol Biotechnol 2022; 106:5249-5259. [PMID: 35821432 DOI: 10.1007/s00253-022-12053-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/24/2022] [Accepted: 06/26/2022] [Indexed: 12/30/2022]
Abstract
Reports on chloroplast-targeted protein delivery using cell-penetrating peptides are scarce. In this study, a novel peptide-based macromolecule delivery strategy targeting chloroplasts was successfully developed in wheat mesophyll protoplasts. A peptide derived from the signal sequence of the chloroplast-targeted protein of ferredoxin-thioredoxin reductase catalytic chain of Spinacia oleracea with UniProtKB Id-P41348 exhibits properties of cellular internalization. DNase I was efficiently delivered into the chloroplast using 10 μM cTP with an efficiency of more than 90%. This cell-penetrating peptide-mediated approach offers various advantages over the existing chloroplast targeting methods, such as non-invasiveness, biocompatibility, low-toxicity, and target-specific delivery. The present study shows that peptide-based strategies hold tremendous potential in the field of chloroplast biotechnology. KEY POINTS: • Screening of database of chloroplast targeting peptides in order to develop an efficient cell-penetrating peptide termed as cTP. • cTP efficiently crosses the cell barrier and demonstrated chloroplast-localization. • cTP can be incorporated as a promising strategy for delivering macromolecules for crop improvement.
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Yanagawa Y, Suenaga Y, Iijima Y, Okino A, Mitsuhara I. Temperature-controlled atmospheric-pressure plasma treatment induces protein uptake via clathrin-mediated endocytosis in tobacco cells. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2022; 39:179-183. [PMID: 35937533 PMCID: PMC9300422 DOI: 10.5511/plantbiotechnology.22.0105a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/05/2022] [Indexed: 06/15/2023]
Abstract
Previously, we developed a method that uses temperature-controlled atmospheric-pressure plasma to induce protein uptake in plant cells. In the present work, we examined the mechanism underlying such uptake of a fluorescent-tagged protein in tobacco leaf cells. Intact leaf tissue was irradiated with N2 plasma generated by a multi-gas plasma jet and then exposed to the test protein (histidine-tagged superfolder green fluorescence protein fused to adenylate cyclase); fluorescence intensity was then monitored over time as an index of protein uptake. Confocal microscopy revealed that protein uptake potential was retained in the leaf tissue for at least 3 h after plasma treatment. Further examination indicated that the introduced protein reached a similar amount to that after overnight incubation at approximately 5 h after irradiation. Inhibitor experiments revealed that protein uptake was significantly suppressed compared with negative controls by pretreatment with sodium azide (inhibitor of adenosine triphosphate hydrolysis) or sucrose or brefeldin A (inhibitors of clathrin-mediated endocytosis) but not by pretreatment with genistein (inhibitor of caveolae/raft-mediated endocytosis) or cytochalasin D (inhibitor of micropinocytosis/phagocytosis), indicating that the N2 plasma treatment induced protein transportation across the plant plasma membrane via clathrin-mediated endocytosis.
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Affiliation(s)
- Yuki Yanagawa
- Institute of Agrobiological Sciences, NARO, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan
| | - Yuma Suenaga
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Yusuke Iijima
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Akitoshi Okino
- Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology, J2-32, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Ichiro Mitsuhara
- Institute of Agrobiological Sciences, NARO, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
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9
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Yasukawa T, Oda AH, Nakamura T, Masuo N, Tamura M, Yamasaki Y, Imura M, Yamada T, Ohta K. TAQing2.0 for genome reorganization of asexual industrial yeasts by direct protein transfection. Commun Biol 2022; 5:144. [PMID: 35177796 PMCID: PMC8854394 DOI: 10.1038/s42003-022-03093-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
Genomic rearrangements often generate phenotypic diversification. We previously reported the TAQing system where genomic rearrangements are induced via conditional activation of a restriction endonuclease in yeast and plant cells to produce mutants with marked phenotypic changes. Here we developed the TAQing2.0 system based on the direct delivery of endonucleases into the cell nucleus by cell-penetrating peptides. Using the optimized procedure, we introduce a heat-reactivatable endonuclease TaqI into an asexual industrial yeast (torula yeast), followed by a transient heat activation of TaqI. TAQing2.0 leads to generation of mutants with altered flocculation and morphological phenotypes, which exhibit changes in chromosomal size. Genome resequencing suggested that torula yeast is triploid with six chromosomes and the mutants have multiple rearrangements including translocations having the TaqI recognition sequence at the break points. Thus, TAQing2.0 is expected as a useful method to obtain various mutants with altered phenotypes without introducing foreign DNA into asexual industrial microorganisms. The TAQing system is upgraded and optimised as the foreign-DNA-free genome engineering technology, TAQing2.0. Genomic rearrangements are randomly induced by introducing the TaqI restriction endonuclease into non-sporulating industrial yeast with cell-penetrating peptides, leading to generation of mutants with altered phenotypes.
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Affiliation(s)
- Taishi Yasukawa
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Arisa H Oda
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Takahiro Nakamura
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Naohisa Masuo
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Miki Tamura
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Yuriko Yamasaki
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Makoto Imura
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Takatomi Yamada
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Kunihiro Ohta
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan. .,The Universal Biology Institute of The University of Tokyo, Hongo 7-3-1, Tokyo, 113-0033, Japan.
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10
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Yoda N, Abe Y, Suenaga Y, Matsudate Y, Hoshino T, Sugano T, Nakamura K, Okino A, Sasaki K. Resin Cement-Zirconia Bond Strengthening by Exposure to Low-Temperature Atmospheric Pressure Multi-Gas Plasma. MATERIALS 2022; 15:ma15020631. [PMID: 35057349 PMCID: PMC8778450 DOI: 10.3390/ma15020631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 12/10/2022]
Abstract
The purpose of this study was to investigate the effect of gas species used for low-temperature atmospheric pressure plasma surface treatment, using various gas species and different treatment times, on zirconia surface state and the bond strength between zirconia and dental resin cement. Three groups of zirconia specimens with different surface treatments were prepared as follows: untreated group, alumina sandblasting treatment group, and plasma treatment group. Nitrogen (N2), carbon dioxide (CO2), oxygen (O2), argon (Ar), and air were employed for plasma irradiation. The bond strength between each zirconia specimen and resin cement was compared using a tension test. The effect of the gas species for plasma irradiation on the zirconia surface was investigated using a contact angle meter, an optical interferometer, an X-ray diffractometer, and X-ray photoelectric spectroscopy. Plasma irradiation increased the wettability and decreased the carbon contamination on the zirconia surface, whereas it did not affect the surface topography and crystalline phase. The bond strength varied depending on the gas species and irradiation time. Plasma treatment with N2 gas significantly increased bond strength compared to the untreated group and showed a high bond strength equivalent to that of the sandblasting treatment group. The removal of carbon contamination from the zirconia surface and an increase in the percentage of Zr-O2 on the zirconia surface by plasma irradiation might increase bond strength.
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Affiliation(s)
- Nobuhiro Yoda
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (Y.M.); (T.S.); (K.S.)
- Correspondence: ; Tel.: +81-22-717-8369
| | - Yuri Abe
- FIRST, Tokyo Institute of Technology, Yokohama 226-8502, Japan; (Y.A.); (Y.S.); (A.O.)
| | - Yuma Suenaga
- FIRST, Tokyo Institute of Technology, Yokohama 226-8502, Japan; (Y.A.); (Y.S.); (A.O.)
| | - Yoshiki Matsudate
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (Y.M.); (T.S.); (K.S.)
| | - Tomohiro Hoshino
- Joint Research Department of Next-Generation Dental Material Engineering, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan;
| | - Takehiko Sugano
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (Y.M.); (T.S.); (K.S.)
| | - Keisuke Nakamura
- Department of Advanced Free Radical Science, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan;
| | - Akitoshi Okino
- FIRST, Tokyo Institute of Technology, Yokohama 226-8502, Japan; (Y.A.); (Y.S.); (A.O.)
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (Y.M.); (T.S.); (K.S.)
- Joint Research Department of Next-Generation Dental Material Engineering, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan;
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11
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Tanaka Y, Nanasato Y, Omura K, Endoh K, Kawano T, Iwasaki T. Direct protein delivery into intact plant cells using polyhistidine peptides. Biosci Biotechnol Biochem 2021; 85:1405-1414. [PMID: 33791772 DOI: 10.1093/bbb/zbab055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/23/2021] [Indexed: 02/06/2023]
Abstract
Polyhistidine peptides (PHPs), sequences comprising only histidine residues (>His8), are effective cell-penetrating peptides for plant cells. Using PHP-fusion proteins, we aimed to deliver proteins into cultured plant cells from Nicotiana tabacum, Oryza sativa, and Cryptomeria japonica. Co-cultivation of cultured cells with fusion proteins combining maltose-binding protein (MBP), red fluorescent protein (RFP), and various PHPs (MBP-RFP-His8-His20) in one polypeptide showed the cellular uptake of fusion proteins in all plant cell lines. Maximum intracellular fluorescence was shown in MBP-RFP-His20. Further, adenylate cyclase (CyaA), a synthase of cyclic adenosine monophosphate (cAMP) activated by cytosolic calmodulin, was used as a reporter for protein delivery in living cells. A fusion protein combining MBP, RFP, CyaA, and His20 (MBP-RFP-CyaA-His20) was delivered into plant cells and increased intracellular fluorescence and cAMP production in all cell lines. The present study demonstrates that PHPs are effective carriers of proteins into the intracellular space of various cultured plant cells.
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Affiliation(s)
- Yoshino Tanaka
- Department of Agriculture, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Yoshihiko Nanasato
- Forest Bio-Research Center, Forestry and Forest Products Research Institute, Hitachi, Ibaraki, Japan
| | - Kousei Omura
- Department of Agriculture, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Keita Endoh
- Forest Tree Breeding Center, Forestry and Forest Products Research Institute, Hitachi, Ibaraki, Japan
| | - Tsuyoshi Kawano
- Department of Agriculture, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Takashi Iwasaki
- Department of Agriculture, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
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12
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CRISPR/Cas9-mediated targeted mutagenesis in Japanese cedar (Cryptomeria japonica D. Don). Sci Rep 2021; 11:16186. [PMID: 34376731 PMCID: PMC8355236 DOI: 10.1038/s41598-021-95547-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
Cryptomeria japonica (Japanese cedar or sugi) is one of the most important coniferous tree species in Japan and breeding programs for this species have been launched since 1950s. Genome editing technology can be used to shorten the breeding period. In this study, we performed targeted mutagenesis using the CRISPR/Cas9 system in C. japonica. First, the CRISPR/Cas9 system was tested using green fluorescent protein (GFP)-expressing transgenic embryogenic tissue lines. Knock-out efficiency of GFP ranged from 3.1 to 41.4% depending on U6 promoters and target sequences. The GFP knock-out region was mottled in many lines, indicating genome editing in individual cells. However, in 101 of 102 mutated individuals (> 99%) from 6 GFP knock-out lines, embryos had a single mutation pattern. Next, we knocked out the endogenous C. japonica magnesium chelatase subunit I (CjChlI) gene using two guide RNA targets. Green, pale green, and albino phenotypes were obtained in the gene-edited cell lines. Sequence analysis revealed random deletions, insertions, and replacements in the target region. Thus, targeted mutagenesis using the CRISPR/Cas9 system can be used to modify the C. japonica genome.
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Yanagawa Y, Takeuchi K, Endo M, Furutani A, Ochiai H, Toki S, Mitsuhara I. I- SceI Endonuclease-Mediated Plant Genome Editing by Protein Transport through a Bacterial Type III Secretion System. PLANTS 2020; 9:plants9091070. [PMID: 32825459 PMCID: PMC7570400 DOI: 10.3390/plants9091070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 12/24/2022]
Abstract
Xanthomonas campestris is one of bacteria carrying a type III secretion system which transports their effector proteins into host plant cells to disturb host defense system for their infection. To establish a genome editing system without introducing any foreign gene, we attempted to introduce genome editing enzymes through the type III secretion system. In a test of protein transfer, X. campestris pv. campestris (Xcc) transported a considerable amount of a reporter protein sGFP-CyaA into tobacco plant cells under the control of the type III secretion system while maintaining cell viability. For proof of concept for genome editing, we used a reporter tobacco plant containing a luciferase (LUC) gene interrupted by a meganuclease I-SceI recognition sequence; this plant exhibits chemiluminescence of LUC only when a frameshift mutation is introduced at the I-SceI recognition site. Luciferase signal was observed in tobacco leaves infected by Xcc carrying an I-SceI gene which secretes I-SceI protein through the type III system, but not leaves infected by Xcc carrying a vector control. Genome-edited tobacco plant could be regenerated from a piece of infected leaf piece by repeated selection of LUC positive calli. Sequence analysis revealed that the regenerated tobacco plant possessed a base deletion in the I-SceI recognition sequence that activated the LUC gene, indicating genome editing by I-SceI protein transferred through the type III secretion system of Xcc.
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Affiliation(s)
- Yuki Yanagawa
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
| | - Kasumi Takeuchi
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
| | - Masaki Endo
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
| | - Ayako Furutani
- Gene Research Center, Ibaraki University, 3-21-1 Ami, Inashiki, Ibaraki 300-0393, Japan;
| | - Hirokazu Ochiai
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
| | - Seiichi Toki
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
| | - Ichiro Mitsuhara
- Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan; (Y.Y.); (K.T.); (M.E.); (H.O.); (S.T.)
- Correspondence: ; Tel.: +81-29-838-7440
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Kawano H, Takamatsu T, Matsumura Y, Miyahara H, Iwasawa A, Okino A. Influence of Gas Temperature in Atmospheric Non-Equilibrium Plasma on Bactericidal Effect. Biocontrol Sci 2018; 23:167-175. [PMID: 30584203 DOI: 10.4265/bio.23.167] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
In this study, the relationship between plasma gas temperature and the bactericidal effects on five of bacteria (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis and Bacillus cereus (spore)) in liquid was investigated using a temperature-controllable plasma source. We determined that the bactericidal ability improved as the plasma gas temperature increased. Specifically, the bactericidal ability on E. coli of 80-℃ plasma was enhanced by as much as 6.3 times compared to that of 10-℃ plasma. The relationship between plasma gas temperature and the amount of hydroxyl radical, singlet oxygen, hydrogen peroxide, and ozone introduced into the solution was investigated. Our results also showed that each reactive species production increased by 2.1, 9.0, 1.6, and 17 times, respectively, with 80-℃ compared to 10-℃ plasma. The relationship between the bactericidal ability and amount of reactive species indicated that singlet oxygen and ozone introduced to the solution mostly influenced the bactericidal ability as the plasma gas temperature increased. We conclude that the plasma gas temperature is the crucial parameter for plasma sterilization.
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Affiliation(s)
| | - Toshihiro Takamatsu
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Yuriko Matsumura
- Division of Infection Prevention and Control, Tokyo Healthcare University
| | | | - Atsuo Iwasawa
- Division of Infection Prevention and Control, Tokyo Healthcare University
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Hanbal SE, Takashima K, Miyashita S, Ando S, Ito K, Elsharkawy MM, Kaneko T, Takahashi H. Atmospheric-pressure plasma irradiation can disrupt tobacco mosaic virus particles and RNAs to inactivate their infectivity. Arch Virol 2018; 163:2835-2840. [PMID: 29948382 DOI: 10.1007/s00705-018-3909-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/27/2018] [Indexed: 11/24/2022]
Abstract
Low-temperature atmospheric-pressure air plasma is a source of charged and neutral gas species. In this study, N-carrying tobacco plants were inoculated with plasma irradiated and non-irradiated tobacco mosaic virus (TMV) solution, resulting in necrotic local lesions on non-irradiated, but not on irradiated, TMV-inoculated leaves. Virus particles were disrupted by plasma irradiation in an exposure-dependent manner, but the viral coat protein subunit was not. TMV RNA was also fragmented in a time-dependent manner. These results indicate that plasma irradiation of TMV can collapse viral particles to the subunit level, degrading TMV RNA and thereby leading to a loss of infectivity.
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Grants
- 16H06429 Scientific Research on Innovative Areas from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan
- 16K21723 Scientific Research on Innovative Areas from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan
- 16H06435 Scientific Research on Innovative Areas from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan
- Establishment of international agricultural immunology research-core for a quantum improvement in food safety The Japan Society for the Promotion of Science (JSPS) through the JSPS Core-to-Core Program (Advanced Research Networks)
- Channel System Program Egyptian Government
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Affiliation(s)
- Sara E Hanbal
- Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki-Aza- Aoba, Sendai, 980-0845, Japan
- Department of Virus and Phytoplasma, Plant Pathology Research Institute, Agriculture Research Center, Giza, 12619, Egypt
| | - Keisuke Takashima
- Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Shuhei Miyashita
- Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki-Aza- Aoba, Sendai, 980-0845, Japan
| | - Sugihiro Ando
- Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki-Aza- Aoba, Sendai, 980-0845, Japan
| | - Kumiko Ito
- Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki-Aza- Aoba, Sendai, 980-0845, Japan
| | - Mohsen M Elsharkawy
- Department of Agricultural Botany, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Toshiro Kaneko
- Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan.
| | - Hideki Takahashi
- Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki-Aza- Aoba, Sendai, 980-0845, Japan.
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Chaffey N. Plant Cuttings: news in Botany. ANNALS OF BOTANY 2017; 120:iii-vi. [PMID: 29190354 PMCID: PMC5710509 DOI: 10.1093/aob/mcx169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
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Zhou N, Wu J, Qin YY, Zhao XL, Ding Y, Sun LS, He T, Huang XW, Liu CB, Wang H. Novel peptide MT23 for potent penetrating and selective targeting in mouse melanoma cancer cells. Eur J Pharm Biopharm 2017; 120:80-88. [DOI: 10.1016/j.ejpb.2017.08.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/15/2017] [Accepted: 08/25/2017] [Indexed: 10/19/2022]
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