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2023 Fiscal Year Annual Research Report

A novel immuno-radiotherapy using autologus T cell and pH-responsive capsule for delivery of inorganic nanoparticles

Research Project

Project/Area Number 20K21576
Research InstitutionKobe University

Principal Investigator

佐々木 良平  神戸大学, 医学部附属病院, 教授 (30346267)

Co-Investigator(Kenkyū-buntansha) 荻野 千秋  神戸大学, 工学研究科, 教授 (00313693)
赤坂 浩亮  神戸大学, 医学研究科, 非常勤講師 (20707161)
窪田 光  神戸大学, 医学部附属病院, 医員 (60824208)
Project Period (FY) 2020-07-30 – 2024-03-31
Keywordsナノ粒子 / 免疫放射線療法 / 放射線応答
Outline of Annual Research Achievements

放射線治療は強い細胞傷害性をもつ有用な局所治療法であるが、治療経過に伴い腫瘍細胞 がPD-L1等の腫瘍抗原を発現が増強する事が報告され ている。この腫瘍抗原の増加によって、宿主の免疫細胞群による免疫システムが作動し、CD8細胞の膜表面上のPD-1と腫瘍細胞のPD-L1が免疫チェックポイントを形成し、更なる治療抵抗性の原因となる。これまで細胞傷害性のCD8細胞をがん治療に応用する試みは数々提案されてきたが、CD8細胞はその増幅が困難であり、固形癌ではその有用性は確認されていない。
過酸化チタンナノ粒子を表面修飾で電荷的に中性にし、pH反応性カプセル内に包含させ、その後タンニン酸を用いたMetal-Phenol Network(MPN法)で生体親和性を持たせ、エクソソームへの取り込みを可能にする。腫瘍細胞への特異的集積性の検討に関して、がん幹細胞に高発現しているCD44を認識する抗体と過酸化チタンナノ粒子を結合させることに成功し、CD44陽性細胞とCD44陰性細胞を用いたin vitroの実験系において腫瘍集積性の評価を行った。蛍光顕微鏡によるCD44陽性細胞またはCD44陰性細胞へのナノ粒子の取り込みを評価し、CD44陽性細胞内への有意な過酸化チタンナノ粒子の取り込み量の増加を認めた。腫瘍増殖抑制効果の検討に関して、タンニン酸を用いて無機分子・有機分子の結合体の作成の実験を進め、その合成に成功した。それらを用いて放射線照射の併用効果をコロニーアッセイにて評価した。CD44陽性細胞においては、過酸化チタンナノ粒子と放射線を併用することにより放射線単独または過酸化チタンナノ粒子単独よりも有意な腫瘍増殖抑制効果を認めた。これらの検討により、CD44を高頻度に発現するがん細胞へ高効率な過酸化チタンナノ粒子の輸送に成功した。

  • Research Products

    (15 results)

All 2023

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (5 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Gold Nanoparticles Enhance the Tumor Growth-Suppressing Effects of Cetuximab and Radiotherapy in Head and Neck Cancer In Vitro and In Vivo2023

    • Author(s)
      Sato Takumi、Kakei Yasumasa、Hasegawa Takumi、Kashin Masahiko、Teraoka Shun、Yamaguchi Akinobu、Sasaki Ryohei、Akashi Masaya
    • Journal Title

      Cancers

      Volume: 15 Pages: 5697~5697

    • DOI

      10.3390/cancers15235697

    • Peer Reviewed / Open Access
  • [Journal Article] Innovative Combination Treatment to Expand the Indications of Particle Therapy: Spacer Placement Surgery Using Bio-Absorbable Polyglycolic Acid Spacer2023

    • Author(s)
      Komatsu Shohei、Wang Tianyuan、Terashima Kazuki、Demizu Yusuke、Anzai Makoto、Suga Masaki、Yamashita Tomohiro、Suzuki Osamu、Okimoto Tomoaki、Sasaki Ryohei、Fukumoto Takumi
    • Journal Title

      Journal of the American College of Surgeons

      Volume: 238 Pages: 119~128

    • DOI

      10.1097/XCS.0000000000000873

    • Peer Reviewed / Open Access
  • [Journal Article] Comparative study of sub-second temporal resolution 4D-MRI and 4D-CT for target motion assessment in a phantom model2023

    • Author(s)
      Wang Tianyuan、Sofue Keitaro、Shimada Ryuji、Ishihara Takeaki、Yada Ryuichi、Miyamoto Masanori、Sasaki Ryohei、Murakami Takamichi
    • Journal Title

      Scientific Reports

      Volume: 13 Pages: 15685-15685

    • DOI

      10.1038/s41598-023-42773-z

    • Peer Reviewed / Open Access
  • [Journal Article] Radiomics and dosiomics for predicting complete response to definitive chemoradiotherapy patients with oesophageal squamous cell cancer using the hybrid institution model2023

    • Author(s)
      Kawahara Daisuke、Murakami Yuji、Awane Shota、Emoto Yuki、Iwashita Kazuma、Kubota Hikaru、Sasaki Ryohei、Nagata Yasushi
    • Journal Title

      European Radiology

      Volume: 34 Pages: 1200~1209

    • DOI

      10.1007/s00330-023-10020-8

    • Peer Reviewed / Open Access
  • [Journal Article] Oncological outcomes of concurrent chemoradiotherapy with docetaxel, cisplatin, and 5‐fluorouracil for locally advanced squamous cell carcinoma of the external auditory canal: A single‐center study2023

    • Author(s)
      Yamada Akihiro、Shinomiya Hirotaka、Uehara Natsumi、Iritani Keisuke、Tatehara Shun、Furukawa Tatsuya、Teshima Masanori、Miyawaki Daisuke、Fujita Takeshi、Kakigi Akinobu、Kiyota Naomi、Sasaki Ryohei、Nibu Ken‐ichi
    • Journal Title

      Head & Neck

      Volume: 45 Pages: 2498~2504

    • DOI

      10.1002/hed.27461

    • Peer Reviewed
  • [Journal Article] Assessing Therapeutic Response to Radium-223 with an Automated Bone Scan Index among Metastatic Castration-Resistant Prostate Cancer Patients: Data from Patients in the J-RAP-BSI Trial2023

    • Author(s)
      Kitajima Kazuhiro、Kuyama Junpei、Kawahara Takashi、Suga Tsuyoshi、Otani Tomoaki、Sugawara Shigeyasu、Kono Yumiko、Tamaki Yukihisa、Seko-Nitta Ayumi、Ishiwata Yoshinobu、Ito Kimiteru、Toriihara Akira、Watanabe Shiro、Hosono Makoto、Miyake Hideaki、Yamamoto Shingo、Sasaki Ryohei、Narita Mitsuhiro、Yamakado Koichiro
    • Journal Title

      Cancers

      Volume: 15 Pages: 2784~2784

    • DOI

      10.3390/cancers15102784

    • Peer Reviewed / Open Access
  • [Journal Article] Multicenter retrospective study of stereotactic body radiotherapy for patients with previously untreated initial small hepatocellular carcinoma2023

    • Author(s)
      Doi Yoshiko、Nagata Yasushi、Matsumoto Yasuo、Numata Kazushi、Sasaki Ryu、Yamada Takashi、Igaki Hiroshi、Imagumbai Toshiyuki、Katoh Norio、Yoshitake Tadamasa、Shimizuguchi Takuya、Fujioka Den、Inoue Minoru、Koide Yutaro、Kimura Tomoki、Ito Yoshinori
    • Journal Title

      Hepatology Research

      Volume: 53 Pages: 749~760

    • DOI

      10.1111/hepr.13908

    • Peer Reviewed / Open Access
  • [Journal Article] Prognostic Value of Radiomics Analysis of Skeletal Muscle After Radical Irradiation of Esophageal Cancer2023

    • Author(s)
      IWASHITA KAZUMA、KUBOTA HIKARU、NISHIOKA RIKU、EMOTO YUKI、KAWAHARA DAISUKE、ISHIHARA TAKEAKI、MIYAWAKI DAISUKE、NISHIBUCHI IKUNO、NAGATA YASUSHI、SASAKI RYOHEI
    • Journal Title

      Anticancer Research

      Volume: 43 Pages: 1749~1760

    • DOI

      10.21873/anticanres.16328

    • Peer Reviewed
  • [Journal Article] Ligation of the ethmoid arteries in superselective intra‐arterial infusion of cisplatin for advanced maxillary sinus cancer fed by the ophthalmic artery2023

    • Author(s)
      Tamagawa Kotaro、Shinomiya Hirotaka、Okada Takuya、Tatehara Shun、Teshima Masanori、Sasaki Ryohei、Nibu Ken‐ichi
    • Journal Title

      Head & Neck

      Volume: 45 Pages: E16-E24

    • DOI

      10.1002/hed.27341

    • Peer Reviewed / Open Access
  • [Journal Article] 2-Hydroxyglutarate magnetic resonance spectroscopy in adult brainstem glioma2023

    • Author(s)
      Iwahashi Hirofumi、Nagashima Hiroaki、Tanaka Kazuhiro、Uno Takiko、Hashiguchi Mitsuru、Maeyama Masahiro、Somiya Yuichiro、Komatsu Masato、Hirose Takanori、Itoh Tomoo、Sasaki Ryohei、Sasayama Takashi
    • Journal Title

      Journal of Neurosurgery

      Volume: 139 Pages: 355-362

    • DOI

      10.3171/2022.12.JNS221954

    • Peer Reviewed / Open Access
  • [Presentation] Exosomes enhance the radiation sensitivity and metastasis via miR-6823-5p in pancreatic MIAPaCa-2 cell2023

    • Author(s)
      Ai Nakaoka*, Makiko Nakahana*, Sachiko Inubushi, Yasuyuki Shimizu*, Kazuma Iwashita*, Naritoshi Mukumoto*, Kana Kobayashi*, Takeaki Ishihara*, Daisuke Miyawaki* and Ryohei Sasaki*
    • Organizer
      American Association of Cancer Research Annual Meeting 2023
    • Int'l Joint Research
  • [Presentation] A novel radiosensitizer of titanium peroxide nanoparticles (TiOxNPs) through continuous ROS generation2023

    • Author(s)
      Ryohei Sasaki, Hiroaki Akasaka, Masao Nakayama, Yoshiko Fujita, Hikaru Kubota, Kenta Morita, Mennaallah Hassan, Mohammed Salah, Yuya Nishimura,Naritoshi Mukumoto, Takeaki Ishihara, Daisuke Miyawaki, Chiaki Ogino.
    • Organizer
      American Association of Cancer Research Annual Meeting 2023
    • Int'l Joint Research
  • [Presentation] Anti-tumor immunity evolved by novel titanium peroxide nanoparticles (TiOxNPs) as a radiosensitizer and PD-1 blockade2023

    • Author(s)
      Yoshiko Fujita, HIkaru Kubota, Chiaki Ogino, Ryohei Sasaki
    • Organizer
      American Association of Cancer Research Annual Meeting 2023
    • Int'l Joint Research
  • [Presentation] Titanium peroxides nanoparticles are promising radiosensitizers to eliminate pancreatic cancer stem cells2023

    • Author(s)
      Mohammed Salah, Hiroki Kawaguchi, Hiroaki Akasaka, Yasuyuki Shimizu, Kenta Morita, Yuya Nishimura, Hikaru Kubota, Tomomi Sogawa, NaritoshiMukumoto, Chiaki Ogino, Ryohei Sasaki.
    • Organizer
      American Association of Cancer Research Annual Meeting 2023
    • Int'l Joint Research
  • [Presentation] 放射線照射後の膵がん細胞由来エクソソームによる遊走能制御に関する基礎的検討2023

    • Author(s)
      中岡 藍*、仲波名 真希子*、張朱 睿賢*、山内 史人*、清水 康之*、岩下 和真*、梶原 彰文*、佐々木 理栄*、椋本 成俊*、小林 加奈*、石原 武明*、宮脇 大輔*、佐々木 良平*
    • Organizer
      日本放射線腫瘍学会第36回学術大会

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Published: 2024-12-25  

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