Updated on 2025/08/11

写真a

 
OKUDA Akiko
 
Organization
Academic Assembly Institute of Medicine and Dentistry Health Sciences Associate Professor
Faculty of Medicine School of Health Sciences Medical Technology Associate Professor
Title
Associate Professor
External link

Degree

  • 理学 ( 2004.1   東邦大学 )

Research Interests

  • 細胞生物学

  • ケミカルバイオロジー

  • 臨床化学

  • 分子生物学

  • ドラッグデリバリー

Research Areas

  • Life Science / Cell biology

  • Life Science / Molecular biology  / 細胞工学

  • Life Science / Pharmacology  / ドラッグデリバリー

Research History

  • Niigata University   Health Sciences, Institute of Medicine and Dentistry, Academic Assembly   Associate Professor

    2024.2

  • Niigata University   Medical Technology, School of Health Sciences, Faculty of Medicine   Associate Professor

    2024.2

  • Niigata University   Faculty of Medicine School of Health Sciences Medical Technology   Lecturer

    2020.4 - 2024.1

  • Niigata University   Faculty of Medicine School of Health Sciences Medical Technology   Assistant Professor

    2014.11 - 2020.3

Professional Memberships

Qualification acquired

  • Medical Technologist

 

Papers

  • Phosphoproteomic analysis of signal transduction dynamics induced by a modified cell-penetrating peptide-protein complex. Reviewed International journal

    Akiko Okuda, Hayato Takihara, Reika Kuroiwa, Shujiro Okuda

    Biochemical and biophysical research communications   778   152356 - 152356   2025.7

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    Cell-penetrating peptides (CPPs) deliver cargo proteins into cells; however, most CPPs rely on nonspecific electrostatic interactions, limiting their cell-type specificity. The CPP Pas2r12 delivers cargo, such as enhanced green fluorescent protein (EGFP) and immunoglobulin G, into the cytosol, primarily through caveolae-dependent endocytosis. To elucidate the intracellular signaling underlying Pas2r12-mediated delivery, time-resolved phosphoproteomic analyses were performed following treatment with Pas2r12 or the Pas2r12-EGFP complex. Early phosphorylation of mitogen-activated protein kinase 1 (MAPK1) and ephrin B1 (EFNB1) was observed following stimulation with either Pas2r12 or the Pas2r12-EGFP complex, whereas F11R phosphorylation occurred only in response to Pas2r12. Notably, MAPK1 phosphorylation consistently increased at all timepoints after stimulation with either treatment. In addition, lysophosphatidic acid receptor 1 (LPAR1) phosphorylation was induced by both treatments at 30 min. EFNB1, F11R, and LPAR1 are cell surface ligands or receptors that are potential targets of Pas2r12 or the Pas2r12-EGFP complex. These results suggest that sustained MAPK1 phosphorylation may play a central role in cellular response to Pas2r12-based delivery. Future studies should aim at establishing Pas2r12 as an efficient and versatile protein delivery tool, with particular focus on exploiting specific cell-surface molecules to enhance targeting specificity.

    DOI: 10.1016/j.bbrc.2025.152356

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  • Inhibition of enhanced green fluorescent protein cytosolic delivery mediated by modified cell-penetrating peptide due to high overexpression of Caveolin-1 Reviewed

    Akiko Okuda, Keito Sugai, Shujiro Okuda

    Biochem Biophys Res Commun .   733   2024.11

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.bbrc.2024.150586.

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  • 前期高齢者の味覚・栄養状態およびフレイル調査(第2報)

    小山 諭, 住吉 智子, 内山 美枝子, 奥田 明子, Hansani Abeywickarama M., 清野 由美子, 坂井 さゆり, 横野 知江, 菊永 淳, 佐藤 由紀子, 齋藤 あや, 佐藤 美由紀, 成田 太一, 井上 智代, 山下 優子

    栄養   39 ( 2 )   110 - 110   2024.6

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  • Activation of ERK signal by protein delivery of modified cell-penetrating peptide Reviewed

    Akiko Okuda, Momoka Kumakura, Honoka Shimizu, Risa Sudo, Keito Sugai

    Jounal of Analytical Bio-Science   46 ( 5 )   242 - 250   2024.1

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  • The role of zinc on nutritional status, sarcopenia, and frailty in older adults: a scoping review. Reviewed International journal

    Hansani Madushika Abeywickrama, Mieko Uchiyama, Tomoko Sumiyoshi, Akiko Okuda, Yu Koyama

    Nutrition reviews   2023.8

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    BACKGROUND: Zinc (Zn) deficiency, malnutrition, sarcopenia, and frailty are prevalent among older adults and are prominent factors contributing to disability and mortality. OBJECTIVE: This scoping review was conducted to aid understanding of the extent and types of research addressing the role of Zn in nutritional status, sarcopenia, and frailty, among older individuals. METHOD: A systematic search was performed in August 2022 of 3 electronic databases (PubMed, Web of Science, and ProQuest) using predefined search terms. The review was conducted referring to the Arksey and O'Malley framework and PRISMA-ScR. RESULTS: The search retrieved 16 018 records, and a total of 49 studies were included in this review after the screening. Of those, 30 were based on dietary Zn intake, 18 on tissue Zn levels, and 1 on both. Most studies were based on cross-sectional data from community-dwelling older adults. Studies addressing the associations between Zn status and individual anthropometric and sarcopenia-related variables reported inconsistent results. However, most studies reported inverse associations between malnutrition, frailty, and Zn status. CONCLUSION: There was more consistent evidence of the relationship of Zn status with malnutrition, sarcopenia, and frailty rather than with individual nutritional parameters. Validated screening and assessment tools and criteria and prospective studies are required to elucidate the relationship of Zn with sarcopenia and frailty in the older population.

    DOI: 10.1093/nutrit/nuad094

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  • 前期高齢者の味覚・栄養状態およびフレイル調査(第1報)

    小山 諭, 住吉 智子, 内山 美枝子, 奥田 明子, ハンサニ・アベウィックラマ, 松田 瑞葵, 坂井 さゆり, 横野 知江

    栄養   38 ( 2 )   89 - 89   2023.6

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  • Unveiling microbiome profiles in human inner body fluids and tumor tissues with pancreatic or biliary tract cancer Reviewed International journal

    Shujiro Okuda, Yuki Hirose, Hayato Takihara, Akiko Okuda, Yiwei Ling, Yosuke Tajima, Yoshifumi Shimada, Hiroshi Ichikawa, Kazuyasu Takizawa, Jun Sakata, Toshifumi Wakai

    Scientific Reports   12 ( 1 )   8766 - 8766   2022.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    With the discovery of bacterial symbiosis in the tissues of various cancers, the study of the tumor microbiome is attracting a great deal of attention. Anatomically, since the gastrointestinal tract, liver, and pancreas form a continuous ductal structure, the microbiomes in the digestive juices of these organs may influence each other. Here, we report a series of microbiome data in tumor-associated tissues such as tumor, non-tumor, and lymph nodes, and body fluids such as saliva, gastric juice, pancreatic juice, bile, and feces of patients with pancreatic or biliary tract cancers. The results show that the microbiome of tumor-associated tissues has a very similar bacterial composition, but that in body fluids has different bacterial composition which varies by location, where some bacteria localize to specific body fluids. Surprisingly, Akkermansia was only detected in the bile of patients with biliary tract cancer and its presence was significantly associated with the performance of external biliary drainage (P = 0.041). Furthermore, we found that tumor-associated tissues and body fluids in deep inner body are mostly inhabited by unidentified and uncharacterized bacteria, suggesting that such bacteria may be potential targets for precision therapy in the future.

    DOI: 10.1038/s41598-022-12658-8

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    Other Link: https://www.nature.com/articles/s41598-022-12658-8

  • Assessment of circadian patterns in salivary cortisol and chromogranin A levels in intensive care unit nurses during working and non-working days Reviewed

    Hansani Madushika Abeywickrama, Akiko Okuda, Natsue Hori, Tomoe Yokono, Mieko Uchiyama

    Journal of Nursing Science and Engineering   9   178 - 189   2022.5

  • Protein Delivery to Cytosol by Cell-Penetrating Peptide Bearing Tandem Repeat Penetration-Accelerating Sequence Reviewed International journal

    Akiko Okuda, Shiroh Futaki

    Methods in Molecular Biology   2383   265 - 273   2022

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Part of collection (book)   Publisher:Springer US  

    Pas2r12 is comprised of a repeat of the penetration-accelerating sequence (Pas) (Pas2: FFLIG-FFLIG) and D-form dodeca-arginine (r12), a cell-penetrating peptide. Pas2r12 significantly enhances cytosolic delivery of cargo proteins, including enhanced green fluorescent protein and immunoglobulin G. Simply incubating Pas2r12 with cargo leads to their cytosolic tranlsocation. Cytosolic delivery of cargo by Pas2r12 involves caveolae-mediated endocytosis. In this chapter, we describe methods of cytosolic delivery of cargo using Pas2r12 and provide methods for investigating the cellular uptake pathway of cargo by Pas2r12.

    DOI: 10.1007/978-1-0716-1752-6_18

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  • フレイル・ロコモ・サルコペニアの予防・改善:味覚と亜鉛

    小山 諭, アベウィッカラム・ハンサニ, 奥田 明子, 住吉 智子, 内山 美枝子

    BIO Clinica   36 ( 13 )   1301 - 1306   2021.11

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    Language:Japanese   Publisher:(株)北隆館  

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  • Effect of fetal bovine serum on the cytosolic protein delivery using modified cell-penetrating peptide Reviewed

    Akiko Okuda, Akira Oikawa

    43 ( 5 )   314 - 320   2020.12

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  • Validation of human salivary proteins affected by normal diet Reviewed

    International journal of analytical bio-science   8 ( 1 )   18 - 23   2020.3

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    Authorship:Lead author, Corresponding author   Language:English   Publisher:The Society of Analytical Bio-Science  

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  • 味覚のアセスメント 主観的味覚と味覚センサーの比較

    小山 諭, 大沼 彩香, 小野間 憲泰, 内山 美枝子, 奥田 明子, 飯島 淳彦

    栄養   35 ( 1 )   53 - 55   2020.3

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  • 新たな視点で見る栄養評価 味覚のアセスメント 主観的味覚と味覚センサー

    小山 諭, 大沼 彩香, 小野間 憲泰, 内山 美枝子, 奥田 明子, 飯島 淳彦

    栄養   4 ( 2 )   114 - 114   2019.6

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  • Oligoarginine-Bearing Tandem Repeat Penetration-Accelerating Sequence Delivers Protein to Cytosol via Caveolae-Mediated Endocytosis. Reviewed International journal

    Akiko Okuda, Shinya Tahara, Hisaaki Hirose, Toshihide Takeuchi, Ikuhiko Nakase, Atsushi Ono, Masanori Takehashi, Seigo Tanaka, Shiroh Futaki

    Biomacromolecules   20 ( 5 )   1849 - 1859   2019.4

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    To facilitate the cytosolic delivery of larger molecules such as proteins, we developed a new cell-penetrating peptide sequence, named Pas2r12, consisting of a repeated Pas sequence (FFLIG-FFLIG) and d-dodeca-arginine (r12). This peptide significantly enhanced the cellular uptake and cytosolic release of enhanced green fluorescent protein and immunoglobulin G as cargos. We found that simply mixing Pas2r12 with cargos could generate cytosolic introducible forms. The cytosolic delivery of cargos by Pas2r12 was found to be an energy-requiring process, to rely on actin polymerization, and to be suppressed by caveolae-mediated endocytosis inhibitors (genistein and methyl-β-cyclodextrin) and small interfering RNA against caveolin-1. These results suggest that Pas2r12 enhances membrane penetration of cargos without the need for cross-linking and that caveolae-mediated endocytosis may be the route by which cytosolic delivery is enhanced.

    DOI: 10.1021/acs.biomac.8b01299

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  • Identification of transcriptional regulatory elements of the poly(ADP-ribose) polymerase-1 gene in neural stem/progenitor cells Reviewed

    Suguru Kurokawa, Akiko Okuda, Yoko Kondo, Seigo Tanaka, Masanori Takehashi

    International Journal of Analytical Bio-Science   7 ( 1 )   6 - 13   2019.3

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  • Suppression of cell cycle progression by poly(ADP-ribose) polymerase inhibitor PJ34 in neural stem/progenitor cells. Reviewed International journal

    Suguru Kurokawa, Akiko Okuda, Yuki Nishizawa, Kyoko Furukawa, Ayumi Sumihiro, Yuki Nakaji, Seigo Tanaka, Masanori Takehashi

    Biochemical and biophysical research communications   510 ( 1 )   59 - 64   2019.2

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    Neural stem/progenitor cells (NSPCs) express higher levels of poly(ADP-ribose) polymerase 1 (PARP1) than mouse embryonic fibroblasts (MEFs). Inhibition of PARP induces the expression of several genes in the p53 signaling pathway, including p21, which is critical for cell cycle control at the G1/S phase, triggers apoptosis, and suppresses cell cycle progression in NSPCs. However, upon the up-regulation of p21, the cell cycle does not arrest at any specific phase. In the present study, the expression of genes specific to the G1/S and G2/M phases of the cell cycle were analyzed following treatment with PJ34 (N-[6-oxo-5,6-dihydro-phenanthridin-2-yl]-N,N-dimethylacetamide), an inhibitor of PARP. PJ34 treatment dramatically down-regulated cyclin B1 expression in NSPCs, but not in MEFs, which was confirmed by a promoter assay. Down-regulation of FoxM1 and B-MYB revealed that the down-regulation of cyclin B occurs at the transcriptional level. GADD45 was also specifically up-regulated in NSPCs. Taken together, the activation of p53 by PJ34 treatment in NSPCs induced changes in the expression of genes involved in the cell cycle. Fluorescence-activated cell sorting analysis revealed that PJ34 treatment suppressed G2/M to G1 progression in NSPCs, but not in MEFs. These data indicate that PJ34 treatment inhibits cyclin expression at the mRNA level and suppresses cell cycle progression in NSPCs.

    DOI: 10.1016/j.bbrc.2019.01.025

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  • Differences in subjective taste between Japanese and SriLankan students depending on food composition,nationality, and serum zinc Reviewed

    Yu Koyama, Shalika Dewmi Premarathne, Thulasika Oppilamany, Ayaka Ohnuma, Akiko Okuda, Atsuhiko Iijima, Noriyasu Onoma, Mieko Uchiyama

    Clinical Nutrition Experimental   23   60 - 68   2019.1

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  • 味覚の相違に及ぼす食事組成、国民性・微量栄養素の影響

    小山 諭, シャリカ・プレマラツネ, 大沼 彩香, チュラシカ・オピラマニー, 内山 美枝子, 山田 悦子, 齊藤 里佳, 高成田 里菜, 小野間 憲泰, 奥田 明子, 平澤 侑也, 藤森 麻佑, 飯島 淳彦

    外科と代謝・栄養   52 ( 3 )   155 - 155   2018.6

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  • 食事内容の変化と味覚および味覚センサーとの関連

    小山 諭, 大沼 彩香, 小野間 憲泰, 内山 美枝子, 奥田 明子, 飯島 淳彦

    日本静脈経腸栄養学会雑誌   33 ( Suppl. )   283 - 283   2018.1

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  • Poly(ADP-ribose) polymerase inhibitors activate the p53 signaling pathway in neural stem/progenitor cells Reviewed

    Akiko Okuda, Suguru Kurokawa, Masanori Takehashi, Aika Maeda, Katsuya Fukuda, Yukari Kubo, Hyuma Nogusa, Tomoka Takatani-Nakase, Shujiro Okuda, Kunihiro Ueda, Seigo Tanaka

    BMC NEUROSCIENCE   18 ( 1 )   14   2017.1

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    DOI: 10.1186/s12868-016-0333-0

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  • Autonomic Nerve Activity and Ventricular Tachyarrhythmias Associated with Structural Heart Diseases

    Chinushi Masaomi, Saitoh Osamu, Okuda Akiko, Furushima Hiroshi

    Japanese Journal of Electrocardiology   36 ( 1 )   31 - 37   2016

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    Language:Japanese   Publisher:一般社団法人 日本不整脈心電学会  

    交感神経興奮は器質的心疾患症例の心室不整脈に対する催不整脈効果を有し,迷走神経興奮は抗不整脈作用を示すと考えられる.自律神経興奮はその強度のみならず,交感神経興奮と迷走神経興奮のバランス,変動のダイナミクスも不整脈発症に影響を及ぼす.日常診療では,器質的心疾患を有する心室不整脈に,心機能と不整脈の両面からβ遮断薬が用いられるとともに,β遮断薬作用を併せもつIII群抗不整脈薬が処方されている.繰り返し生じる心室頻拍によりelectrical stormに陥った場合,自律神経は重要な治療介入ポイントとなる.初期治療では鎮痛・鎮静・麻酔とともにβ遮断薬が用いられるが,重症例では短期作用型β遮断薬静注,さらには心臓交感神経のブロック・切除,腎動脈カテーテルアブレーション,硬膜外ブロックなどの非薬物治療が用いられる場合があり,交感神経興奮抑制を介した一定の治療効果が期待できる.

    DOI: 10.5105/jse.36.31

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  • Cell-surface Accumulation of Flock House Virus-derived Peptide Leads to Efficient Internalization via Macropinocytosis Reviewed

    Ikuhiko Nakase, Hisaaki Hirose, Gen Tanaka, Akiko Tadokoro, Sachiko Kobayashi, Toshihide Takeuchi, Shiroh Futaki

    MOLECULAR THERAPY   17 ( 11 )   1868 - 1876   2009.11

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    DOI: 10.1038/mt.2009.192

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  • Novel System to Achieve One-Pot Modification of Cargo Molecules with Oligoarginine Vectors for Intracellular Delivery Reviewed

    Kentaro Takayama, Akiko Tadokoro, Silvia Pujals, Ikuhiko Nakase, Ernest Giralt, Shiroh Futaki

    BIOCONJUGATE CHEMISTRY   20 ( 2 )   249 - 257   2009.2

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    DOI: 10.1021/bc800327f

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  • Facile one-pot modification with oligoarginine for intracellular delivery Reviewed

    Kentaro Takayama, Akiko Tadokoro, Ikuhiko Nakase, Shiroh Futaki

    Peptide Science   71 - 72   2008.10

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  • Arginine-rich peptides and their internalization mechanisms Reviewed

    S. Futaki, I. Nakase, A. Taclokoro, T. Takeuchi, A. T. Jones

    BIOCHEMICAL SOCIETY TRANSACTIONS   35 ( 4 )   784 - 787   2007.8

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  • Interaction of arginine-rich peptides with membrane-associated proteoglycans is crucial for induction of actin organization and macropinocytosis Reviewed

    Ikuhiko Nakase, Akiko Tadokoro, Noriko Kawabata, Toshihide Takeuchi, Hironori Katoh, Kiyo Hiramoto, Manabu Negishi, Motoyoshi Nomizu, Yukio Sugiura, Shiroh Futaki

    BIOCHEMISTRY   46 ( 2 )   492 - 501   2007.1

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    DOI: 10.1021/bi0612824

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  • Acid wash in determining cellular uptake of fab/cell-permeating peptide conjugates Reviewed

    Shouju Kameyama, Mayo Horie, Takeo Kikuchi, Takao Omura, Akiko Tadokoro, Toshihide Takeuchi, Ikuhiko Nakase, Yukio Sugiura, Shiroh Futaki

    BIOPOLYMERS   88 ( 2 )   98 - 107   2007

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    DOI: 10.1002/bip.20689

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  • Direct and efficient cytosolic delivery using oligoarginine vectors in the presence of pyrenebutyrate

    Toshihide Takeuchi, Michie Kosuge, Akiko Tadokoro, Yukio Sugiura, Mayumi Nishi, Mitsuhiro Kawata, Naomi Sakai, Stefan Matile, Shiroh Futaki

    Peptide Science   206   2006.11

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  • Membrane-associated proteoglycans and cellular uptake of arginine-rich peptides

    Akiko Tadokoro, Ikuhiko Nakase, Noriko Kawabata, Toshihide Takeuchi, Yukio Sugiura, Shiroh Futaki

    Peptide Science   205   2006.11

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  • Direct and rapid cytosolic delivery using cell-penetrating peptides mediated by pyrenebutyrate Reviewed

    Toshihide Takeuchi, Michie Kosuge, Akiko Tadokoro, Yukio Sugiura, Mayumi Nishi, Mitsuhiro Kawata, Naomi Sakai, Stefan Matile, Shiloh Futaki

    ACS CHEMICAL BIOLOGY   1 ( 5 )   299 - 303   2006

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    DOI: 10.1021/cb600127m

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  • Intracellular delivery of arginine-rich peptides using counteranions Reviewed

    T Takeuchi, M Kosuge, A Tadokoro, Y Sugiura, N Sakai, S Matile, S Futaki

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   125   96 - 97   2005

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  • Arginine carrier peptide bearing Ni(II) chelator to promote cellular uptake of histidine-tagged proteins Reviewed

    S Futaki, M Niwa, Nakase, I, A Tadokoro, YJ Zhang, M Nagaoka, N Wakako, Y Sugiura

    BIOCONJUGATE CHEMISTRY   15 ( 3 )   475 - 481   2004.5

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    DOI: 10.1021/bc034181g

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  • Interaction of the Escherichia coli lipoprotein NlpI with periplasmic Prc (Tsp) protease Reviewed

    A Tadokoro, H Hayashi, T Kishimoto, Y Makino, S Fujisaki, Y Nishimura

    JOURNAL OF BIOCHEMISTRY   135 ( 2 )   185 - 191   2004.2

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1093/jb/mvh022

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Books

  • レジデントのための食事・栄養療法ガイド : 病態に応じた栄養処方の組み立て方

    佐々木, 雅也( Role: Joint author)

    日本医事新報社  2022.4  ( ISBN:9784784949731

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    Total pages:232p   Language:Japanese

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  • 器質的心疾患症例の心室不整脈と自律神経興奮

    池主雅臣, 齋藤修, 奥田明子, 古嶋博司

    日本不整脈心電学会  2016.3 

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  • 鼓動のリズムバランスを感じ診る

    池主雅臣, 齋藤修, 奥田明子

    ライフサイエンス出版  2015.9 

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  • 慢性腎臓病(CKD)合併心房細動例における抗凝固療法

    池主雅臣, 齋藤修, 奥田明子

    メディカルレビュー社  2014.12 

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Awards

  • 優秀演題賞

    2025.3   生物試料分析科学会   改変型膜透過ペプチドおよび複合体の刺激により生じるリン酸化シグナルの網羅的解析

    奥田明子

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  • 新潟大学優秀論文賞

    2020.12   Oligoarginine-Bearing Tandem Repeat Penetration-Accelerating Sequence Delivers Protein to Cytosol via Caveolae- Mediated Endocytosis

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  • 日本生化学会JB論文賞受賞

    2005.6   日本生化学会  

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Research Projects

  • ドラッグデリバリーとAIを用いた生命科学研究におけるエネルギーの削減に向けた試験研究

    Grant number:R06-1038

    2024.7 - 2025.3

    Awarding organization:内田エネルギー科学振興財団

    奥田明子、奥田修二郎

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    Authorship:Principal investigator 

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  • Development of a "live cell imaging system" using membrane-penetrating peptides and AI

    Grant number:24K08630

    2024.4 - 2027.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

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    Authorship:Principal investigator 

    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

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  • Verification of taste improvement and nutritional status and frailty improvement / prevention effect for elderly people by Zn supplementation

    Grant number:21K11644

    2021.4 - 2025.3

    System name:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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  • 膜透過ペプチドの受容体をエントランスとしたターゲティングデリバリー

    Grant number:20K05744

    2020.4 - 2023.3

    System name:科学研究費助成事業 基盤研究(C)

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    奥田 明子

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    膜透過ペプチドPas2r12は、ヒト胎児腎臓由来の培養細胞(HEK293)においてEGFP(緑色蛍光タンパク質)や抗体(IgG)をサイトゾルへと導入することができる。これらの分子のサイトゾルへの導入は、カベオラ依存性エンドサイトーシスが主な経路であることがわかっている。一方、Caveolin-1はカベオラを構成する重要なタンパク質であり、このタンパクの発現量が多いほど細胞膜上のカベオラの数は多くなることが知られている。Pas2r12によるEGFPのサイトゾル導入メカニズムを解明する為に、カベオラ主要構成因子であるCaveolin-1の過剰発現による影響を調べた。Caveolin-1遺伝子を担うプラスミドDNAを用いて、Caveolin-1過剰発現株3株(Cav38、Cav44、Cav53)を作製した。細胞内蛍光分子の比較定量にはフローサイトメーターを用い、細胞内蛍光分子の観察には共焦点レーザー顕微鏡を用いた。Pas2r12による細胞内へのEGFP導入量は、HEK293と比べてCaveolin-1過剰発現3株全てにおいて顕著に増加していた。一方、Pas2r12によるEGFPのサイトゾル導入率は、HEK293に比べてCav38とCav 53では増加し、Cav44では顕著に低下していた。以上の結果から細胞内へと取り込まれるEGFP量は、Caveolin-1過剰発現により促進されることが示された。しかし、EGFPのサイトゾル導入においては、Caveolin-1過剰発現株によって違いがみられたことから、Caveolin-1量だけではなくCaveolin-1のリン酸化や細胞内シグナル伝達の違いなど、より詳細な検証が必要である。

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  • Relationship between "Taste" Stimulation and Voluntary Swallowing Function: Verification of a Feeding Approach

    Grant number:19K22748

    2019.6 - 2022.3

    System name:Grants-in-Aid for Scientific Research Challenging Research (Exploratory)

    Research category:Challenging Research (Exploratory)

    Awarding organization:Japan Society for the Promotion of Science

    Uchiyama Mieko

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    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

    This study examines whether there is a difference in 'swallowing' with and without the sense of 'deliciousness.' From the validation work we have carried out so far, we identified the possibility of quantifying 'deliciousness' using biological reactions. We also attempted to formulate a sample that would serve as a 'taste' stimulus and quantify the voluntary swallowing function. The initially planned evaluation using an atmospheric pressure sensor in the pharyngeal cavity was replaced by a less invasive method of image analysis around the laryngeal ridge, which was then verified. As a result, it was confirmed that there were changes in swallowing speed depending on the taste differences. The results of this project can be used as basic data for taste stimulation to support feeding.

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  • 抗がん剤脱毛時の頭皮悪化が予測できるウィッグ装着型ウェアラブル端末の開発

    Grant number:19H03931

    2019.4 - 2023.3

    System name:科学研究費助成事業 基盤研究(B)

    Research category:基盤研究(B)

    Awarding organization:日本学術振興会

    内山 美枝子, 峰松 健夫, 小山 諭, 黒瀬 雅之, 飯島 淳彦, 李 鎔範, 玉井 奈緒, 坂井 さゆり, 坂上 百重, 柏 美智

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    Grant amount:\17030000 ( Direct Cost: \13100000 、 Indirect Cost:\3930000 )

    本研究は、抗がん剤投与における頭皮の炎症レベルとの関連を見つけるために、①抗がん剤投与による頭皮炎症レベルの決定と②炎症レベルを教師データとし、入力データに頭皮状態の測定結果を採用した機械学習(人工知能の1つ)を、新潟大学ビックデータアクティベーションにて行うことで医学的なエビデンスをつけた抗がん剤投与中の頭皮の炎症レベルと頭皮状態の変化シグナルと関連を提示することを目的とし、時系列的に悪化が予測できるウィッグ装着型のウェアラブル端末の開発を最終目標としている。今年度は①温湿度に着目し、外部環境にかかわる頭部状態の検証及び②頭皮の画像解析の方策の検討を行った。①方法は、毛髪を有した健常女性35名、脱毛がありウィッグを装着している女性4名、計39名を対象に,人工気候室にて、2条件の設定下(①:温度28℃・湿度50%、②:温度30℃・湿度50%)で15分の軽作業による滞在中の頭部内の温湿度測定を行った。測定部位は頭頂部(以下A)、右側頭部(以下B)、左側頭部(以下C)、後頭部(以下D)の4か所とした。結果、測定部位による温湿度について全対象の測定結果から、①条件では温度は(34・55℃)が高値で湿度はD(50.97%)が高値であった。②条件ではC(35.30℃)がすべての部位より高値であり、湿度はD(50.85%)と最も高値を示した。②乳がんによる抗がん剤治療を受けた患者4名、健常者34名についてUSBマイクロスコープを用いて頭部画像を撮影し、グレーレベル同時生起行列(GLCM)を用いた特徴量解析をした結果、GLCM特徴量のうち、均質性、明度・彩度、相関、逆差分では脱毛頭皮と健常者の頭皮の間に有意差がみられた。脱毛頭皮と健常者の頭皮の状態は異なると考えられ、脱毛時の頭皮構造と不快症状との関連について検証を進める一助となることが示唆された。

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  • サイトゾル移行型ドラッグデリバリーを用いた生体治療(心筋梗塞モデルでの検証)

    2017.4 - 2019.3

    System name:科学研究費補助金基盤研究(C)

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    奥田明子, 池主雅臣, 二木史朗

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    Grant type:Competitive

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  • PARP活性阻害および発現抑制が精子幹細胞に与える影響

    2017.4 - 2018.3

    System name:平成29年度大阪大谷大学薬学部共同研究費

    Awarding organization:大阪大谷大学薬学部

    竹橋正則

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    Grant type:Competitive

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  • 視覚障害者が捉えている風味(flavor)=『美味しさ』の検証

    2016.10 - 2018.3

    System name:科学技術人材育成費補助事業「ダイバーシティ研究環境実現イニシアティブ(連携型)」連携型共同研究スタートアップ支援制度

    Awarding organization:文部科学省

    内山美枝子

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    Grant type:Competitive

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  • 膜透過ペプチドを利用した新規抗がん剤「PARP阻害剤」の抗癌効果予測法の開発

    2016.4 - 2017.3

    System name:平成28年度課題提案型 共同利用・共同研究

    Awarding organization:京都大学化学研究所

    奥田明子

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    Grant type:Competitive

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  • ポリ(ADP-リボシル)化を指標としたPARP阻害剤の評価法の開発

    2015.4 - 2016.3

    System name:平成27年度 課題提案型 共同利用・共同研究

    Awarding organization:京都大学化学研究所

    奥田明子

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    Grant type:Competitive

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  • サイトゾルにおける膜透過性ペプチド(CPP)のリアルタイムイメージング

    2013.4 - 2017.3

    System name:科学研究費助成事業若手研究(B)

    Research category:若手研究(B)

    Awarding organization:日本学術振興会

    奥田明子

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    Grant type:Competitive

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  • 神経幹細胞におけるPARP機能の解明

    2010.4 - 2011.3

    System name:平成22年度大阪大谷大学薬学部共同研究費

    Awarding organization:大阪大谷大学薬学部

    奥田明子

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    Grant type:Competitive

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  • 効果的な薬物送達を目指した塩基性ペプチドによる細胞質内移行メカニズムの解明

    2008.4 - 2009.3

    System name:科学研究費助成事業若手研究(B)

    Research category:若手研究(B)

    Awarding organization:日本学術振興会

    奥田明子

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    Grant type:Competitive

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Teaching Experience (researchmap)

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Teaching Experience

  • 生体システム機能検査科学特講

    2023
    Institution name:新潟大学

  • 生体システム機能検査科学特講演習

    2023
    Institution name:新潟大学

  • 保健学特定研究(検査技術科学)

    2023
    Institution name:新潟大学

  • 病態化学分析学II

    2022
    Institution name:新潟大学

  • 保健学総合

    2021
    Institution name:新潟大学

  • 保健学特別研究(検査技術科学)

    2021
    Institution name:新潟大学

  • 保健学特別研究(検査技術科学)

    2018
    Institution name:新潟大学

  • 入門医療英語

    2018
    Institution name:新潟大学

  • 医療安全管理学

    2018
    Institution name:新潟大学

  • スタディスキルズ (検査)

    2017
    Institution name:新潟大学

  • 医療英語(検査)

    2016
    Institution name:新潟大学

  • 医学検査管理総論

    2016
    Institution name:新潟大学

  • 生体情報解析学実習

    2016
    Institution name:新潟大学

  • 臨床検査実習

    2016
    Institution name:新潟大学

  • 生体情報解析学特論

    2016
    Institution name:新潟大学

  • 疾病の予防と治療

    2016
    Institution name:新潟大学

  • 臨床検査管理概論

    2016
    -
    2018
    Institution name:新潟大学

  • 生活習慣と健康

    2015
    Institution name:新潟大学

  • 卒業研究

    2015
    Institution name:新潟大学

  • 人体の構造と機能Ⅰ

    2015
    Institution name:新潟大学

  • 病態化学分析学実習Ⅰ

    2014
    Institution name:新潟大学

  • 病態化学分析学実習Ⅱ

    2014
    Institution name:新潟大学

  • 生体機能学実習

    2014
    -
    2021
    Institution name:新潟大学

  • 病態化学分析学Ⅰ

    2014
    -
    2021
    Institution name:新潟大学

  • 生理機能検査科学実習

    2014
    -
    2021
    Institution name:新潟大学

  • 一般検査科学実習

    2014
    -
    2017
    Institution name:新潟大学

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