Details of the Researcher

PHOTO

Hitomi Okita
Section
Tohoku University Hospital
Job title
Research Associate

Papers 22

  1. Intravenously engrafted human multilineage-differentiating stress-enduring (Muse) cells rescue erectile function after rat cavernous nerve injury. International-journal

    Juntaro Koyama, Shinichi Yamashita, Yuya Kato, Kunihisa Nezu, Takuro Goto, Shinji Fujii, Yu Suzuki, Atsushi Nakayashiki, Yoshihide Kawasaki, Naoki Kawamorita, Hitomi Okita, Takako Ito, Yoshihiro Kushida, Masafumi Goto, Mari Dezawa, Teiji Tominaga, Kuniyasu Niizuma, Akihiro Ito

    BJU international 133 (3) 332-340 2024/03

    DOI: 10.1111/bju.16232  

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    OBJECTIVE: To evaluate the effect of intravenous administration of human multilineage-differentiating stress-enduring (Muse) cells on rat postoperative erectile dysfunction (ED) with cavernous nerve (CN) injury without an immunosuppressant. MATERIALS AND METHODS: Male Sprague-Dawley rats were randomised into three groups after CN crush injury. Either human-Muse cells, non-Muse mesenchymal stem cells (MSCs) (both 1.0 × 105 cells), or vehicle was infused intravenously at 3 h after CN injury without immunosuppressant. Erectile function was assessed by measuring intracavernous pressure (ICP) and arterial pressure (AP) during pelvic nerve electrostimulation 28 days after surgery. At 48 h and 28 days after intravenous infusion of Muse cells, the homing of Muse cells and non-Muse MSCs was evaluated in the major pelvic ganglion (MPG) after CN injury. In addition, expressions of C-X-C motif chemokine ligand (Cxcl12) and glial cell line-derived neurotrophic factor (Gdnf) in the MPG were examined by real-time polymerase chain reaction. Statistical analyses and comparisons among groups were performed using one-way analysis of variance followed by the Tukey test for parametric data and Kruskal-Wallis test followed by the Dunn-Bonferroni test for non-parametric data. RESULTS: The mean (SEM) ICP/AP values at 28 days were 0.51 (0.02) in the Muse cell group, 0.37 (0.03) in the non-Muse MSC group, and 0.36 (0.04) in the vehicle group, showing a significant positive response in the Muse cell group compared with the non-Muse and vehicle groups (P = 0.013 and P = 0.010, respectively). In the MPG, Muse cells were observed to be engrafted at 48 h and expressed Schwann cell markers S100 (~46%) and glial fibrillary acidic protein (~24%) at 28 days, while non-Muse MSCs were basically not engrafted at 48 h. Higher gene expression of Cxcl12 (P = 0.048) and Gdnf (P = 0.040) was found in the MPG of the Muse group than in the vehicle group 48 h after infusion. CONCLUSION: Intravenously engrafted human Muse cells recovered rat erectile function after CN injury in a rat model possibly by upregulating Cxcl12 and Gdnf.

  2. Distribution of Amniotic Epithelial Cells After Intraportal Infusion in a Rat Model. International-journal

    Miyako Tanaka, Kazuaki Tokodai, Masato Sato, Shuhei Yamada, Hitomi Okita, Takako Ito, Masatoshi Saito, Tetsuro Hoshiai, Shigehito Miyagi, Toshio Miki, Michiaki Unno, Takashi Kamei, Masafumi Goto

    Transplantation proceedings 54 (2) 513-515 2022/03

    DOI: 10.1016/j.transproceed.2021.09.077  

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    BACKGROUND: Human amniotic epithelial cells (hAECs) are increasingly gaining attention as novel sources for cell transplantation. In clinical practice, intraportal infusion is considered one of the leading approaches for transplantation; however, this has not yet been validated for in vivo transplantation of hAECs. Thus, this study aims to investigate the distribution of hAECs post intraportal infusion and compare this distribution with other cell administration routes. METHODS: Wistar/ST rats were divided into 4 groups (n = 3 for each) based on cell administration route: group 1, intraportal; group 2, the spleen; group 3, tail veins; and group 4, penile veins. Subsequently, hAECs (1 × 107) stained with XenoLight DiR were infused into each recipient. Cell distribution was evaluated using an in vivo imaging system. RESULTS: DiR signals were detected in the rat livers of groups 1 and 2 with those in group 2 being much weaker than those in group 1. Necrosis of small intestine was observed in 2 cases in group 2. DiR signals were detected in the lungs in groups 3 and 4 because of systemic circulation; however, all the animals died within 20 minutes of infusions. CONCLUSIONS: Intraportal infusion is potentially applicable for safe and efficient transplantation of hAECs into the liver, whereas hAECs administration via the spleen carries a risk of thrombosis in a narrow portal vein system. Our results also indicate that hAECs administration via the systemic circulation could cause pulmonary embolism in clinical settings.

  3. 先天性代謝異常症の根治を目的とした羊膜由来細胞による新規細胞移植療法確立の試み

    戸子台 和哲, 沖田 ひとみ, 吉田 まなみ, 伊藤 貴子, 佐藤 将人, 田中 美也子, 齋藤 昌利, 星合 哲郎, 宮城 重人, 三木 敏生, 海野 倫明, 後藤 昌史, 亀井 尚, 東北大学病院臨床研究推進センター再生医療ユニット

    日本小児科学会雑誌 125 (2) 201-201 2021/02

    Publisher: (公社)日本小児科学会

    ISSN: 0001-6543

  4. 先天性代謝異常症の根治を目的とした羊膜由来細胞による新規細胞移植療法確立の試み

    戸子台 和哲, 沖田 ひとみ, 吉田 まなみ, 伊藤 貴子, 佐藤 将人, 田中 美也子, 齋藤 昌利, 星合 哲郎, 宮城 重人, 三木 敏生, 海野 倫明, 後藤 昌史, 亀井 尚, 東北大学病院臨床研究推進センター再生医療ユニット

    日本小児科学会雑誌 125 (2) 201-201 2021/02

    Publisher: (公社)日本小児科学会

    ISSN: 0001-6543

  5. CAR-T導入に伴う細胞治療部門のQMS構築と管理運営

    岩木 啓太, 阿部 真知子, 伊藤 貴子, 沖田 ひとみ, 島貫 美和子, 伊藤 智啓, 細川 真梨, 郷野 辰幸, 石岡 夏子, 佐藤 裕子, 関 修, 成田 香魚子, 藤原 実名美, 張替 秀郎

    日本輸血細胞治療学会誌 66 (2) 346-346 2020/05

    Publisher: (一社)日本輸血・細胞治療学会

    ISSN: 1881-3011

    eISSN: 1883-0625

  6. CAR-T細胞療法実施に向け輸血部門が果たす役割 事前適格性確認の監査経験から

    阿部 真知子, 岩木 啓太, 伊藤 貴子, 沖田 ひとみ, 伊藤 智啓, 細川 真梨, 郷野 辰幸, 石岡 夏子, 佐藤 裕子, 関 修, 成田 香魚子, 藤原 実名美, 張替 秀郎

    日本輸血細胞治療学会誌 65 (6) 906-906 2019/12

    Publisher: (一社)日本輸血・細胞治療学会

    ISSN: 1881-3011

    eISSN: 1883-0625

  7. 若い力が切り拓く今後の細胞移植医療 羊膜由来幹細胞を用いた低侵襲細胞移植療法の確立

    戸子台 和哲, 伊藤 貴子, 沖田 ひとみ, 齋藤 昌利, 星合 哲郎, 山田 修平, 宮城 重人, 三木 敏生, 海野 倫明, 亀井 尚, 後藤 昌史

    Organ Biology 26 (3) 59-59 2019/10

    Publisher: (一社)日本臓器保存生物医学会

    ISSN: 1340-5152

    eISSN: 2188-0204

  8. Establishment of monocular-limited photoreceptor degeneration models in rabbits Peer-reviewed

    Hitomi Isago, Eriko Sugano, Namie Murayama, Makoto Tamai, Hiroshi Tomita

    BMC OPHTHALMOLOGY 13 19 2013/05

    DOI: 10.1186/1471-2415-13-19  

    ISSN: 1471-2415

    eISSN: 1471-2415

  9. Different Anti-Oxidant Effects of Thioredoxin 1 and Thioredoxin 2 in Retinal Epithelial Cells Peer-reviewed

    Eriko Sugano, Hitomi Isago, Namie Murayama, Makoto Tamai, Hiroshi Tomita

    CELL STRUCTURE AND FUNCTION 38 (1) 81-88 2013

    DOI: 10.1247/csf.12025  

    ISSN: 0386-7196

    eISSN: 1347-3700

  10. Intravitreal injection or topical eye-drop application of a mu-calpain C2L domain peptide protects against photoreceptor cell death in Royal College of Surgeons' rats, a model of retinitis pigmentosa Peer-reviewed

    Taku Ozaki, Mitsuru Nakazawa, Tetsuro Yamashita, Hiroyuki Sorimachi, Shoji Hata, Hiroshi Tomita, Hitomi Isago, Ayaka Baba, Sei-ichi Ishiguro

    BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR BASIS OF DISEASE 1822 (11) 1783-1795 2012/11

    DOI: 10.1016/j.bbadis.2012.07.018  

    ISSN: 0925-4439

  11. Intravitreal injection or topical eye-drop application of a μ-calpain C2L domain peptide protects against photoreceptor cell death in Royal College of Surgeons' rats, a model of retinitis pigmentosa. International-journal Peer-reviewed

    Taku Ozaki, Mitsuru Nakazawa, Tetsuro Yamashita, Hiroyuki Sorimachi, Shoji Hata, Hiroshi Tomita, Hitomi Isago, Ayaka Baba, Sei-Ichi Ishiguro

    Biochimica et biophysica acta 1822 (11) 1783-95 2012/11

    DOI: 10.1016/j.bbadis.2012.07.018  

    ISSN: 0006-3002

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    Mitochondrial μ-calpain initiates apoptosis-inducing factor (AIF)-dependent apoptosis in retinal photoreceptor degeneration. Mitochondrial μ-calpain inhibitors may represent therapeutic targets for the disease. Therefore, we sought to identify inhibitors of mitochondrial calpains and determine their effects in Royal College of Surgeons' (RCS) rats, an animal model of retinitis pigmentosa (RP). We synthesized 20-mer peptides of the C2-like (C2L) domain of μ-calpain. Two μ-calpain peptides N2 and N9 inhibited mitochondrial μ-calpain activity (IC(50); 892 and 498nM, respectively), but not other proteases. Western blotting showed that 50μM of both μ-calpain peptides caused specific degradation of mitochondrial μ-calpain. Three-dimensional structure of calpains suggested that the peptides N2 and N9 corresponded to the regions forming salt bridges between the protease core domain 2 and the C2L domain. We determined the inhibitory regions of μ-calpain peptides N2 and N9 using 10-mers, and one peptide, N2-10-2, inhibited the activity of mitochondrial μ-calpain (IC(50); 112nM). We next conjugated the peptide N2-10-2 to the C-terminal of HIV-1 tat (HIV), a cell-penetrating peptide. Using isolated rat liver mitochondria, 50μM HIV-conjugated μ-calpain N2-10-2 peptide (HIV-Nμ, IC(50); 285nM) significantly inhibited AIF truncation. The intravitreal injection of 20mM HIV-Nμ also prevented retinal photoreceptor apoptosis determined by TUNEL staining, and preserved retinal function assessed by electroretinography in RCS rats. Topical application of 40mM HIV-Nμ also prevented apoptosis of retinal photoreceptors in RCS rats. Our results demonstrate that HIV-Nμ, a peptide inhibitor of mitochondrial μ-calpain, offers a new modality for treating RP.

  12. NOTCH SIGNALING PATHWAY REGULATES PROLIFERATION AND DIFFERENTIATION OF IMMORTALIZED MULLER CELLS UNDER HYPOXIC CONDITIONS IN VITRO Peer-reviewed

    Z. Wang, E. Sugano, H. Isago, N. Murayama, M. Tamai, H. Tomita

    NEUROSCIENCE 214 171-180 2012/07

    DOI: 10.1016/j.neuroscience.2012.04.025  

    ISSN: 0306-4522

  13. Age-Dependent Differences in Recovered Visual Responses in Royal College of Surgeons Rats Transduced with the Channelrhodopsin-2 Gene Peer-reviewed

    Hitomi Isago, Eriko Sugano, Zhuo Wang, Namie Murayama, Eri Koyanagi, Makoto Tamai, Hiroshi Tomita

    JOURNAL OF MOLECULAR NEUROSCIENCE 46 (2) 393-400 2012/02

    DOI: 10.1007/s12031-011-9599-y  

    ISSN: 0895-8696

    eISSN: 1559-1166

  14. Differentiation of neuronal cells from NIH/3T3 fibroblasts under defined conditions Peer-reviewed

    Zhuo Wang, Eriko Sugano, Hitomi Isago, Teru Hiroi, Makoto Tamai, Hiroshi Tomita

    Development Growth and Differentiation 53 (3) 357-365 2011/04

    DOI: 10.1111/j.1440-169X.2010.01235.x  

    ISSN: 0012-1592 1440-169X

    eISSN: 1440-169X

  15. Immune responses to adeno-associated virus type 2 encoding channelrhodopsin-2 in a genetically blind rat model for gene therapy Peer-reviewed

    E. Sugano, H. Isago, Z. Wang, N. Murayama, M. Tamai, H. Tomita

    GENE THERAPY 18 (3) 266-274 2011/03

    DOI: 10.1038/gt.2010.140  

    ISSN: 0969-7128

    eISSN: 1476-5462

  16. Channelrhodopsin-2 gene transduced into retinal ganglion cells restores functional vision in genetically blind rats Peer-reviewed

    Hiroshi Tomita, Eriko Sugano, Hitomi Isago, Teru Hiroi, Zhuo Wang, Emi Ohta, Makoto Tamai

    EXPERIMENTAL EYE RESEARCH 90 (3) 429-436 2010/03

    DOI: 10.1016/j.exer.2009.12.006  

    ISSN: 0014-4835

  17. Channelrhodopsins provide a breakthrough insight into strategies for curing blindness Peer-reviewed

    Hiroshi Tomita, Eriko Sugano, Hitomi Isago, Makoto Tamai

    JOURNAL OF GENETICS 88 (4) 409-415 2009/12

    DOI: 10.1007/s12041-009-0062-6  

    ISSN: 0022-1333

    eISSN: 0973-7731

  18. Visual Properties of Transgenic Rats Harboring the Channelrhodopsin-2 Gene Regulated by the Thy-1.2 Promoter Peer-reviewed

    Hiroshi Tomita, Eriko Sugano, Yugo Fukazawa, Hitomi Isago, Yuka Sugiyama, Teru Hiroi, Toru Ishizuka, Hajime Mushiake, Megumi Kato, Masumi Hirabayashi, Ryuichi Shigemoto, Hiromu Yawo, Makoto Tamai

    PLOS ONE 4 (11) e7679 2009/11

    DOI: 10.1371/journal.pone.0007679  

    ISSN: 1932-6203

  19. 人工網膜に替る新規視機能再建法の検討

    菅野 江里子, 富田 浩史, 八尾 寛, 石塚 徹, 砂金 ひとみ, 成川 聡子, 吉岡 まなみ, 玉井 信

    日本眼科学会雑誌 112 (3) 303-303 2008/03

    Publisher: (公財)日本眼科学会

    ISSN: 0029-0203

  20. BDNF Increases the Phagocytic Activity in Cultured Iris Pigment Epithelial Cells Peer-reviewed

    Hikari Yoshida, Hiroshi Tomita, Eriko Sugano, Hitomi Isago, Sei-ichi Ishiguro, Makoto Tamai

    CELL STRUCTURE AND FUNCTION 33 (1) 21-26 2008

    DOI: 10.1247/csf.07025  

    ISSN: 0386-7196

    eISSN: 1347-3700

  21. Restoration of visual response in aged dystrophic RCS rats using AAV-mediated channelopsin-2 gene transfer Peer-reviewed

    Hiroshi Tomita, Eriko Sugano, Hiromu Yawo, Toru Ishizuka, Hitomi Isago, Satoko Narikawa, Sebastian Kuegler, Makoto Tamai

    INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE 48 (8) 3821-3826 2007/08

    DOI: 10.1167/iovs.06-1501  

    ISSN: 0146-0404

  22. Nitric oxide-induced accumulation of lipofuscin-like materials is caused by inhibition of cathepsin S Peer-reviewed

    Eriko Sugano, Hiroshi Tomita, Sei-Ichi Ishiguro, Hitomi Isago, Makoto Tamai

    Current Eye Research 31 (7-8) 607-616 2006/08/01

    DOI: 10.1080/02713680600744851  

    ISSN: 0271-3683 1460-2202

    eISSN: 1460-2202

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Misc. 18

  1. 脂肪組織由来幹細胞(ADSC)バンク設立を目指して

    伊藤貴子, 沖田ひとみ, 佐々木麻美, 原幸司, 今井啓道, 今井啓道, 後藤昌史, 後藤昌史

    日本再生医療学会総会(Web) 23rd 2024

  2. 東北大学における膵島移植の保険診療実施体制の構築

    沖田ひとみ, 伊藤貴子, 佐藤則子, 佐藤則子, 藤尾淳, 戸子台和哲, 戸子台和哲, 戸子台和哲, 岡田克典, 岡田克典, 岡田克典, 海野倫明, 亀井尚, 亀井尚, 後藤昌史, 後藤昌史, 後藤昌史, 後藤昌史

    日本膵・膵島移植学会プログラム・抄録集 50th (CD-ROM) 2023

  3. 東北大学における組織移植推進体制の構築

    沖田 ひとみ, 伊藤 貴子, 佐藤 則子, 岡田 克典, 今井 啓道, 後藤 昌史

    移植 57 (総会臨時) 307-307 2022/10

    Publisher: (一社)日本移植学会

    ISSN: 0578-7947

    eISSN: 2188-0034

  4. アカデミア発の再生医療シーズの実用化へ向けた東北大学再生医療ユニットの取り組み

    沖田ひとみ, 伊藤貴子, 伊藤貴子, 黒田康, 若尾昌平, 出澤真理, 後藤昌史, 張替秀郎

    日本再生医療学会総会(Web) 21st 2022

  5. プログラムフリーザー故障時のバックアップ凍結プランによるアフェレーシス材料レスキュー

    伊藤貴子, 伊藤貴子, 沖田ひとみ, 阿部真知子, 岩木啓太, 藤原実名美, 後藤昌史, 後藤昌史, 張替秀郎, 張替秀郎

    日本再生医療学会総会(Web) 21st 2022

  6. 臨床検査技師を目指す学生の再生医療や細胞プロセッシングセンターに対する意識調査結果

    伊藤貴子, 伊藤貴子, 沖田ひとみ, 吉田まなみ, 丹羽俊文, 張替秀郎, 後藤昌史, 下川宏明

    日本再生医療学会総会(Web) 18th ROMBUNNO.P‐01‐120 (WEB ONLY) 2019

  7. パスボックスを用いた物品搬入出における汚染リスク回避方法の検討

    沖田ひとみ, 伊藤貴子, 伊藤貴子, 吉田まなみ, 張替秀郎, 後藤昌史, 後藤昌史, 下川宏明, 下川宏明

    日本再生医療学会総会(Web) 17th ROMBUNNO.P‐02‐112 (WEB ONLY) 2018

  8. 臨床研究推進センター再生医療ユニットの再生・細胞医療シーズの活性化に向けた細胞提供の取り組み

    伊藤貴子, 伊藤貴子, 沖田ひとみ, 吉田まなみ, 新妻邦泰, 若尾昌平, 出澤真理, 冨永悌二, 張替秀郎, 後藤昌史, 下川宏明

    日本再生医療学会総会(Web) 17th ROMBUNNO.P‐01‐120 (WEB ONLY) 2018

  9. 多点微粒子測定による塵埃発生ワーストポイントにおける環境菌採取箇所の検討

    沖田ひとみ, 伊藤貴子, 伊藤貴子, 吉田まなみ, 張替秀郎, 後藤昌史, 後藤昌史, 下川宏明, 下川宏明

    再生医療 16 376 2017/02/01

    ISSN: 1347-7919

  10. 製造作業時に着用するCPCガウンの使用検討

    伊藤貴子, 沖田ひとみ, 吉田まなみ, 張替秀郎, 後藤昌史, 後藤昌史, 下川宏明, 下川宏明

    再生医療 16 376 2017/02/01

    ISSN: 1347-7919

  11. 細胞プロセッシングセンター活用に向けた東北大学再生医療ユニットの取り組み

    沖田ひとみ, 伊藤貴子, 伊藤貴子, 吉田まなみ, 張替秀郎, 後藤昌史, 後藤昌史, 下川宏明, 下川宏明

    再生医療 15 337 2016/02/01

    ISSN: 1347-7919

  12. 再生・細胞医療シーズの活性化に向けた東北大学再生医療ユニットの取り組み

    伊藤貴子, 伊藤貴子, 沖田ひとみ, 吉田まなみ, 新妻邦泰, 出澤真理, 冨永悌二, 張替秀郎, 後藤昌史, 後藤昌史, 下川宏明, 下川宏明

    再生医療 15 310 2016/02/01

    ISSN: 1347-7919

  13. アカデミアにおける細胞プロセッシングセンター活用の新しいスタイルの模索

    沖田ひとみ, 伊藤貴子, 吉田まなみ, 堺香名子, 横倉俊二, 高柳泰, 大家義則, 西田幸二, 中澤徹, 張替秀郎, 後藤昌史, 下川宏明

    再生医療 14 350 2015/02/01

    ISSN: 1347-7919

  14. カニクイザルの片眼視細胞変性モデルの確立

    砂金ひとみ, 菅野江里子, 村山奈美枝, 原富雄, 萩森一郎, 玉井信, 富田浩史

    日本動物学会大会予稿集 83rd 106 2012/08/20

  15. チャネルロドプシン2を導入した週齢の異なるRCSラットの視覚反応の違い

    砂金ひとみ, 菅野江里子, 村山奈美枝, 玉井信, 富田浩史

    日本動物学会大会予稿集 82nd 98 2011/08/20

  16. ボルボックス由来チャネルロドプシンー2を導入した遺伝盲ラットの光反応性

    砂金ひとみ, 菅野江里子, 廣井照, WANG Zhuo, 玉井信, 富田浩史

    日本動物学会大会予稿集 81st 111 2010/08/20

  17. Characteristics of visual function in rat harboring channelrhodopsin-2 gene by Thy1 promoter

    砂金ひとみ, 富田浩史, 菅野江里子, 廣井照, WANG Zhou, 玉井信

    日本動物学会大会予稿集 80th (Web) 2009

  18. チャネルロドプシン‐2遺伝子を導入した老齢と若齢RCSラットの視覚誘発電位の違い

    砂金ひとみ, 富田浩史, 菅野江里子, 玉井信

    日本動物学会大会予稿集 79th 112 2008/08/20

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